Consent
1 = Yes, I want to participate in this study!
2 = No, I want to quit the study!

No consent follow-up
1 = Yes, I dont want to participate in this survey!
2 = No, I want to participate in the survey!

Consent 2
1 = Yes, I want to participate in the study!
2 = No, I don't want to participate in the study!

Data protection consent
1 = Yes, my data may be collected anonymously!
2 = No, I do not want to disclose my data!

gender
1 = female
2 = male
3 = diverse
4 = unspecified

age
1 = 18-29
2 = 30-39
3 = 40-49
4 = 50-59
5 = 60 or older

education
1 = No qualification / Still in school / Hauptschule / Volksschule certificate
2 = Polytechnical high school certificate
3 = Realschule cerificate
4 = Technical diploma / university entrance qualification

income
1 = up to 1.499 €
2 = 1.500 - 2.999 €
3 = 3.000 - 4.999 €
4 = 5.000 € or more

state
1 = Baden-Wurttemberg
2 = Bavaria
3 = Berlin
4 = Brandenburg
5 = Bremen
6 = Hamburg
7 = Hesse
8 = Mecklenburg-Western Pomerania
9 = Lower Saxony
10 = North Rhine-Westphalia
11 = Rhineland-Palatinate
12 = Saarland
13 = Saxony
14 = Saxony-Anhalt
15 = Schleswig-Holstein
16 = Thuringia

FFQ_fruits_stone fruits
1 = 1x per month or less
2 = 2-3x per month
3 = 1-2x per week
4 = 3-4x per week
5 = 5-6x per week
6 = 1x per day
7 = More than 1x per day
8 = Never

FFQ_dairy and alternatives_milk
1 = Never
2 = 1x per month or less
3 = 2-3x per month
4 = 1-2x per week
5 = 3-4x per week
6 = 5-6x per week
7 = 1x per day
8 = More than 1x per day

frequency mensa
1 = 1x per month or less
2 = 2-3x per month
3 = 1-2x per week
4 = 3-4x per week
5 = 5-6x per week
6 = 1x per day
8 = never

meal composition_breakfast_with meat
0 = not selected
1 = With meat (e.g. meat, sausage)

meal composition_breakfast_with animal products
0 = not selected
1 = with animal products (e.g. eggs, cheese, dairy products)

meal composition_breakfast_with plant products
0 = not selected
1 = with plant products (e.g. vegetables pulses, grains, bread)

meal composition_breakfast_no breakfast
0 = not selected
1 = Don't eat it

knowledge assignment_Amaranth
1 = Pulse
2 = Other food
3 = Dont know it

FFQ legume home_fresh
0 = not selected
1 = Fresh pulses (eg green beans)

FFQ legume home_canned
0 = not selected
1 = Canned pulses (eg peas, chickpeas, lentil stew)

FFQ legume home_dried
0 = not selected
1 = Dried pulses (eg lentils)

FFQ legume home_frozen
0 = not selected
1 = Frozen pulses (eg peas)

FFQ legume home_snacks
0 = not selected
1 = Snacks from pulses (eg lentil chips)

FFQ legume home_pasta
0 = not selected
1 = Pasta from pulses (eg chickpea pasta)

FFQ legume home_hummus
0 = not selected
1 = Hummus (eg from chickpeas)

FFQ legume home_spreads
0 = not selected
1 = Spreads from pulses (eg lentil spreads)

FFQ legume home_tofus
0 = not selected
1 = Tofu (eg smoked or plain tofu)

FFQ legume home_meat substitutes
0 = not selected
1 = Meat substitutes (eg steaksl from soy beans)

FFQ legume home_milk substitutes
0 = not selected
1 = Milk substitutes (eg soy milk)

FFQ legume home_yogurt or curd subsitutes
0 = not selected
1 = Yogurt and curd substitutes (eg soy yogurt)

FFQ legume home_protein powder
0 = not selected
1 = Protein powder (eg from pea protein)

FFQ legume home_none
0 = not selected
1 = None

FFQ legume home_fresh_green beans
0 = not selected
1 = Green beans

FFQ legume home_fresh_peas
0 = not selected
1 = Peas

FFQ legume home_fresh_edamame
0 = not selected
1 = Edamame

FFQ legume home_fresh_other
0 = not selected
1 = Other

FFQ legume home_fresh_none of the above
0 = not selected
1 = None of the above

FFQ legume home_fresh_frequency_green beans
1 = 1x in the last month
2 = 2-3x in the last month
3 = 1-2x per week
4 = 3-4x per week
5 = 5-6x per week
6 = 1x per day
8 = More than 1x per day

FFQ legume home_dried_red and yellow lentils
0 = not selected
1 = Red or yellow lentils

FFQ legume home_dried_other lentils
0 = not selected
1 = Other lentils

FFQ legume home_dried_kidney beans
0 = not selected
1 = Kidney beans

FFQ legume home_dried_white beans
0 = not selected
1 = White beans

FFQ legume home_dried_black beans
0 = not selected
1 = Black beans

FFQ legume home_dried_other beans
0 = not selected
1 = Other beans

FFQ legume home_dried_green peas
0 = not selected
1 = Green peas

FFQ legume home_dried_other peas
0 = not selected
1 = Other peas

FFQ legume home_dried_chickpeas
0 = not selected
1 = Chickpeas

FFQ legume home_canned_fava beans
0 = not selected
1 = Fava beans

FFQ legume home_canned_bean stew
0 = not selected
1 = Bean stew

FFQ legume home_canned_pea stew
0 = not selected
1 = Pea stew

FFQ legume home_canned_chickpea stew
0 = not selected
1 = Chickpea stew

FFQ legume home_canned_brown lentils
0 = not selected
1 = Brown lentils

FFQ legume home_canned_lentil stew
0 = not selected
1 = Lentil stew

FFQ legume home_snacks_chickpea chips
0 = not selected
1 = Chickpea Chips

FFQ legume home_snacks_roasted chickpeas
0 = not selected
1 = Roasted chickpeas

FFQ legume home_snacks_lentil chips
0 = not selected
1 = Lentil chips

FFQ legume home_snacks_roasted peas
0 = not selected
1 = Roasted peas

FFQ legume home_snacks_bean crackers
0 = not selected
1 = Bean crackers

FFQ legume home_snacks_other
0 = not selected
1 = Others

FFQ legume home_tofu_plain tofu
0 = not selected
1 = Plain tofu

FFQ legume home_tofu_smoked tofu
0 = not selected
1 = Smoked tofu

FFQ legume home_tofu_silken tofu
0 = not selected
1 = Silken tofu

FFQ legume home_tofu_tempeh
0 = not selected
1 = Tempeh

FFQ legume home_tofu_other
0 = not selected
1 = Other tofu

FFQ legume home_meat substitutes_soy chunks
0 = not selected
1 = Soy chunks

FFQ legume home_meat substitutes_steak substitute
0 = not selected
1 = Steak substitute

FFQ legume home_meat substitutes_schnitzel substitute
0 = not selected
1 = Schnitzel substitute

FFQ legume home_meat substitutes_gyros or chicken substitute
0 = not selected
1 = Gyros / chicken substitute

FFQ legume home_meat substitutes_sausage substitute
0 = not selected
1 = Sausage substitute

FFQ legume home_meat substitutes_meatball substitute
0 = not selected
1 = Meatball substitute

FFQ legume home_meat substitutes_falafel
0 = not selected
1 = Falafel

FFQ legume home_meat substitutes_burger subsitute
0 = not selected
1 = Burger subsitute

FFQ legume home_meat substitutes_cold cuts
0 = not selected
1 = Cold cuts

FFQ legume home_milk substitutes_pea milk
0 = not selected
1 = Pea milk

FFQ legume home_milk substitutes_soy milk
0 = not selected
1 = Soy milk

FFQ legume home_yogurt or curd subsitutes_pea yogurt
0 = not selected
1 = Pea yogurt or curd

FFQ legume home_yogurt or curd subsitutes_soy yogurt
0 = not selected
1 = Soy yogurt or curd

FFQ legume home_protein powder_pea protein
0 = not selected
1 = Pea protein

FFQ legume home_protein powder_soy protein
0 = not selected
1 = Soy protein

FFQ legume out of home_beans
0 = not selected
1 = Beans

FFQ legume out of home_lentils
0 = not selected
1 = Lentils

FFQ legume out of home_lupins
0 = not selected
1 = Lupins

FFQ legume out of home_meat substitutes
0 = not selected
1 = Meat substitutes (eg Steak from Soy)

FFQ legume out of home_yogurt or curd substitutes
0 = not selected
1 = Yogurt or curd substitutes (eg soy yogurt)

FFQ legume out of home_protein powder
0 = not selected
1 = Protein poweder (eg from pea protein)

FFQ legume out of home_meat substitutes_burger substitute
0 = not selected
1 = Burger substitute

FFQ legume out of home_protein powder_pea protein
0 = not selected
1 = Pea protein powder

FFQ legume out of home_protein powder_soy protein
0 = not selected
1 = Soy protein powder

Assessment legume_peas_healthy
0 = not selected
1 = Healthy

Assessment legume_peas_satiating
0 = not selected
1 = Satiating

Assessment legume_peas_nutritious
0 = not selected
1 = Nutritious

Assessment legume_peas_high in protein
0 = not selected
1 = High in protein

Assessment legume_peas_high in fibre
0 = not selected
1 = High in fibre

Assessment legume_peas_low in fat
0 = not selected
1 = Low in fat

Assessment legume_peas_natural
0 = not selected
1 = Natural

Assessment legume_peas_eco-friendly
0 = not selected
1 = Eco-friendly

Assessment legume_peas_tasty
0 = not selected
1 = Tasty

Assessment legume_peas_affordable
0 = not selected
1 = Affordable

Assessment legume_peas_exotic
0 = not selected
1 = Exotic

Assessment legume_peas_traditional
0 = not selected
1 = Traditional

Assessment legume_peas_suitable for everyday use
0 = not selected
1 = Suitable for everyday use

Assessment legume_peas_intolerable
0 = not selected
1 = Intolerable

Assessment legume_peas_high in carbohydrates
0 = not selected
1 = High in carbohydrates

Assessment legume_peas_high in purines
0 = not selected
1 = High in purines

Assessment legume_peas_poor mans food
0 = not selected
1 = Poor man's food

Assessment legume_beans_high in fibres
0 = not selected
1 = High in fibres

Assessment legume_beans_suitable for everyday use
0 = not selected
1 = Suited for everyday use

Assessment legume_lentils_high in protein
0 = not selected
1 = High in proteins

product class involvement 1 - interest
1 = Disagree (1)
2 = (2)
3 = (3)
4 = (4)
5 = Agree (5)

Preparation differences weekdays weekends
1 = On weekdays, I tend to use quick-cooking legumes (e.g., canned products, pre-cooked legumes).
2 = On weekdays, I prepare elaborate legumes (e.g., dried legumes).
3 = I use legumes the same way regardless of the day of the week.

Estimated increase in legume consumption next 6 months
1 = Very unlikely
2 = Unlikely
3 = Undecided
4 = Likely
5 = Very likely

Possible reasons for increased legume consumption - Knowledge about health benefits - mono legumes
0 = not selected
1 = Single pulses (beans, peas, chickpeas, lentils, lupins and soy beans)

Possible reasons for increased legume consumption - Knowledge about health benefits - processed legumes
0 = not selected
1 = Processed pulses (eg yogurt substitutes, hummus)

Possible reasons for increased legume consumption - Knowledge about health benefits - meat substitutes
0 = not selected
1 = Plant-based meat substitutes (eg Burger, Sausages or minced meat)

Frequency 6 months - Chili con/sin carne
1 = Frequently (more than 6 times)
2 = Rarely (1-6 times)
3 = Never

taste expectation - Chili con/sin carne
1 = (1) Dislike very much
2 = (2)
3 = (3)
4 = (4)
5 = (5) Neither
6 = (6)
7 = (7)
8 = (8)
9 = (9) Like very much

time expectation - Chili con/sin carne
1 = Less than 15 minutes
2 = 15 to 29 minutes
3 = 30 to 59 minutes
4 = 1 to 2 hours
5 = More than 2 hours

Barriers Chili con/sin Carne - too expensive
0 = not selected
1 = Too expansive

Barriers Chili con/sin Carne - effort (time)
0 = not selected
1 = Effort (time)

Barriers Chili con/sin Carne - lack of equipment
0 = not selected
1 = Lack of cookware / equipment

Barriers Chili con/sin Carne - lack of skills
0 = not selected
1 = Lack of cooking skills

Barriers Chili con/sin Carne - seasonal availability
0 = not selected
1 = Seasonal availability (e.g., ingredients only available in summer)

Barriers Chili con/sin Carne - effort (obtaining ingredients)
0 = not selected
1 = Effort (obtaining ingredients)

Barriers Chili con/sin Carne - too many ingredients not normal in household
0 = not selected
1 = Too many different ingredients that are not normally found in the household

Barriers Chili con/sin Carne - complex preparations
0 = not selected
1 = Complex preparation

Barriers Chili con/sin Carne - lack of knowledge
0 = not selected
1 = Lack of knowledge (e.g., about preparation)

Barriers Chili con/sin Carne - health concerns
0 = not selected
1 = Health concerns (e.g., high calorie content, unhealthy ingredients)

Barriers Chili con/sin Carne - Intolerances or allergies
0 = not selected
1 = Intolerances or allergies

Barriers Chili con/sin Carne - religious reasons
0 = not selected
1 = Religious reasons

Barriers Chili con/sin Carne - family preferences
0 = not selected
1 = Family preferences

Barriers Chili con/sin Carne - friends preferences
0 = not selected
1 = Friends' preferences

Barriers Chili con/sin Carne - habit
0 = not selected
1 = Habit (e.g., eating something else)

Barriers Chili con/sin Carne - no interest
0 = not selected
1 = No interest in this dish

Reasons Chili con/sin Carne - costs (cheap)
0 = not selected
1 = Cost (cheap)

Reasons Chili con/sin Carne - little effort (time)
0 = not selected
1 = Little effort (time)

Reasons Chili con/sin Carne - little effort (obtaining ingredients)
0 = not selected
1 = Little effort (obtaining ingredients)

Reasons Chili con/sin Carne - ingredients are storable
0 = not selected
1 = Ingredients are storable

Reasons Chili con/sin Carne - easy preparation
0 = not selected
1 = Easy preparation

Reasons Chili con/sin Carne - healthy
0 = not selected
1 = Health (e.g., low calorie content, healthy ingredients)

Reasons Chili con/sin Carne - good digestibility
0 = not selected
1 = Good digestibility

Reasons Chili con/sin Carne - family preferences
0 = not selected
1 = Family‘s preferences

Reasons Chili con/sin Carne - friends preferences
0 = not selected
1 = Friends’ preferences

Reasons Chili con/sin Carne - habit
0 = not selected
1 = Habit

Reasons Chili con/sin Carne - taste
0 = not selected
1 = Taste

Reasons Chili con/sin Carne - mainly when eating out
0 = not selected
1 = I mainly eat it when I eat out.

Reasons Chili con/sin Carne - other reasons
0 = not selected
1 = Other reasons

Barriers Lentil Bolognese - lack of equipment
0 = not selected
1 = Lack of cookware/equipment

FRL - I just love good food
1 = (1) disagree
2 = (2)
3 = (3)
4 = (4) neither
5 = (5)
6 = (6)
7 = (7) fully agree

eFRL - Shops
1 = At discount stores (e.g., Aldi, Lidl, Netto, Penny)
2 = At supermarkets (e.g., Edeka, Rewe)
3 = At organic supermarkets (e.g., Denn's, Alnatura)
4 = Other

Responsibility groceries
1 = Yes, fully responsible
2 = Yes, shared responsibility
3 = No

Regional cuisine - eating - Asian
0 = not selected
1 = Asian

Regional cuisine - eating - German
0 = not selected
1 = German

Regional cuisine - eating - Mediterranean
0 = not selected
1 = Mediterranean

Regional cuisine - eating - Mexican
0 = not selected
1 = Mexican

Regional cuisine - eating - Middle Eastern
0 = not selected
1 = Middle Eastern

Regional cuisine - eating - None
0 = not selected
1 = No particular preference

Meal planning
1 = Weekly planning (planning meals for an entire week).
2 = Daily planning (planning meals for the current or next day).
3 = I decide spontaneously what to cook.

Recipe sources - cookbooks
0 = not selected
1 = Cookbooks

Recipe sources - paid recipe magazines
0 = not selected
1 = Paid recipe magazines (e.g., my Family and I)

Recipe sources - free magazines
0 = not selected
1 = Free magazines (e.g., Alverde from dm)

Recipe sources - online food blogs
0 = not selected
1 = Online food blogs

Recipe sources - online recipe databases
0 = not selected
1 = Online recipe databases (e.g., Chefkoch)

Recipe sources - social media
0 = not selected
1 = Social media (e.g., Instagram, Pinterest)

Recipe sources - tv cooking shows
0 = not selected
1 = Television cooking shows

Recipe sources - social media videos
0 = not selected
1 = Social media videos (e.g., YouTube)

Recipe sources - friends or family
0 = not selected
1 = Recommendations from friends or family

Recipe sources - traditional cultural sources
0 = not selected
1 = Traditional or cultural sources

Recipe sources - food packaging
0 = not selected
1 = Food packaging or labels

Recipe sources - classes and workshops
0 = not selected
1 = Cooking classes and workshops

Recipe sources - nutritionists
0 = not selected
1 = Nutritionists

Recipe sources - newsletters
0 = not selected
1 = Newsletters

FNS - I am constantly sampling new and different foods
1 = (1) strongly disagree
2 = (2)
3 = (3)
4 = (4) neither
5 = (5)
6 = (6)
7 = (7) strongly agree

diet and animals
1 = Omnivore (animal and plant-based foods)
2 = Vegetarian (no meat or fish)
3 = Vegan (no animal products)
4 = Flexitarian (at least 3 days vegetarian per week, occasional meat or fish)
5 = Pescatarian (no meat, but fish)

Importance food - additives
1 = (1) Not at all important
2 = (2)
3 = (3)
4 = (4) neither unimportant nor important
5 = (5)
6 = (6)
7 = (7) Very important

nutrition related disease - Type 2 diabetes
0 = not selected
1 = Type-2-Diabetes

nutrition related disease - gout
0 = not selected
1 = Gout

nutrition related disease - blood pressure
0 = not selected
1 = High blood pressure

nutrition related disease - cardiovascular disease
0 = not selected
1 = Cardiovascular diseases

diet - religion
0 = not selected
1 = Yes, religiously motivated

diet - health
0 = not selected
1 = Yes, health-related (e.g., allergies, intolerances)

diet - concept
0 = not selected
1 = Yes, following a specific diet (e.g., low carb, paleo)

religion
1 = Christianity
2 = Islam
3 = Judaism
4 = Hinduism
5 = Buddhism
6 = Others

health influence - allergies - nuts
0 = not selected
1 = Nuts (e.g., almonds, hazelnuts, peanuts)

health influence - allergies - fish
0 = not selected
1 = Fish/crustaceans/mollusks

health influence - allergies - soy
0 = not selected
1 = Soy

health influence - allergies - sesame/mustard/celery
0 = not selected
1 = Sesame/mustard/celery

health influence - allergies - lupin
0 = not selected
1 = Lupin

health influence - allergies - eggs
0 = not selected
1 = Eggs

health influence - allergies - tree nuts
0 = not selected
1 = Tree nuts

health influence - intolerances - lactose
0 = not selected
1 = Lactose intolerance

health influence - intolerances - gluten
0 = not selected
1 = Gluten intolerance / Celiac disease

health influence - intolerances - histamine
0 = not selected
1 = Histamine intolerance

health influence - intolerances - fructose
0 = not selected
1 = Fructose intolerance

diet concept - low carb
0 = not selected
1 = Low carb (low carbohydrate)

diet concept - paleo
0 = not selected
1 = Paleo (Stone Age diet)

diet concept - ketogenic
0 = not selected
1 = Ketogenic (high fat, low carbohydrate)

diet concept - fruitarian
0 = not selected
1 = Fruitarian

diet concept - fasting
0 = not selected
1 = Intermittent fasting (e.g., 16 to 8)

diet concept - raw food
0 = not selected
1 = Raw food

monthly food expenditures
1 = less than 100€
2 = 100-199 €
3 = 200-299 €
4 = 300-399 €
5 = 400-499 €
6 = 500-599 €
7 = 600-699 €
8 = 700-799 €
9 = 800-899 €
10 = 900-999 €
11 = 1000-1099 €
12 = 1100-1199 €
13 = 1200-1299 €
14 = 1300-1399 €
15 = 1400-1499 €
16 = more than 1499 €

enough income for food expenditures
1 = Yes
2 = No

inhabitants
1 = Fewer than 1,000 people
2 = 1,001 to 10,000 people
3 = 10,001 to 100,000 people
4 = 100,001 to 500,000 people
5 = More than 500,000 people

migration
1 = I have immigrated
2 = One of my parents immigrated
3 = Both of my parents immigrated
4 = I did not immigrate

professional qualification
1 = Still in training, studying (including a pre-vocational year, internship, [vocational] college, or similar)
2 = No professional qualification and not in vocational training
3 = Apprenticeship (vocational-company-based vocational training)
4 = Berufsqualifizierender Abschluss einer beruflichschulischen Ausblidung z.B. an einer Kerufsfachschule oder einer Kollegschule
5 = Graduation from a technical college, master craftsman's school, technical college, administrative and business academy etc
6 = Bachelor's degree, diploma (UAS)
7 = Master's degree, diploma (university), Magister, state examination, doctorate

employment status
1 = Attending a general education school
2 = University studies
3 = Vocational training
4 = Retraining
5 = Voluntary military service
6 = Federal Voluntary Service, voluntary social or ecological year
7 = Full-time employment (more than 30 hours per week)
8 = Part-time employment
9 = Care interruption due to care leave, maternity leave, parental leave
10 = Retired
11 = Unemployed
12 = Permanently unable to work
13 = Housewife/Househusband

household size
1 = Just me
2 = 2
3 = 3
4 = 4
5 = 5
6 = More than 5

country origin - turkey
0 = not selected
1 = Turkey

country origin - poland
0 = not selected
1 = Poland

country origin - italy
0 = not selected
1 = Italy

country origin - syria
0 = not selected
1 = Syria

country origin - romania
0 = not selected
1 = Romania

country origin - greece
0 = not selected
1 = Greece

country origin - croatia
0 = not selected
1 = Croatia

country origin - afghanistan
0 = not selected
1 = Afghanistan

country origin - vietnam
0 = not selected
1 = Vietnam

country origin - kazakhstan
0 = not selected
1 = Kazakhstan

country origin - spain
0 = not selected
1 = Spain

household situation
1 = I live with my partner
2 = I live with my partner and my children
3 = I live with my children
4 = I live in a shared apartment
5 = I live with my parents or one parent
6 = Other

household situation - kids
0 = None
1 = 1
2 = 2
3 = 3
4 = 4
5 = 5