mustard

(e.g., macaroni and cheese, soufflé)
avocados
bay leaf
beef, esp. corned, grilled, or roasted
beets
cabbage
capers
cheeses (e.g., blue, cheddar, Gruyère, and other hard) and cheese dishes
chicken
chile peppers
cold cuts
coriander
crab
cream and sour cream
cucumbers
cumin
cured meats
curries
curry leaves
dill
egg dishes
fennel
fenugreek
fish
French cuisine, esp. southern
fruits
garlic
German cuisine
gingerbread
green beans
ham
herbs
honey
Indian cuisine, as mustard seeds
Irish cuisine
Italian cuisine, esp. southern
lamb
leeks
lemon, juice
mayonnaise
meats, cold or hot
Mediterranean cuisine
mint, esp. peppermint
mostarda (mustard fruits)
mussels
oil, canola
olive oil
onions
oregano
paprika
parsley
pastrami
pepper: black, green, white
pork
potatoes
poultry
rabbit
salads and salad dressings
salmon
salt: kosher
sauces
sauerkraut
sausages
Scandinavian cuisine
seafood
smoked fish
soy sauce
steaks
sumac
tarragon
tomatoes
turmeric
vegetable-based dishes
vinaigrettes
vinegar: balsamic, red wine, white wine
walnuts: nuts, oil