"Thinning Foods"
that may produce loose stools:

apple juice
excessive coffee
red wine
beans
grape juice
spicy foods
beer
licorice
spinach
broccoli
prune juice
large meals
chocolate
hot beverages/soup

"Thickening Foods"
that may produce firm stools:

applesauce
corn
rice
bananas
nuts
starchy foods
bran
oatmeal
wheat
breads
pasta
cheeses
peanut butter (creamy)

Foods that cannot be completely digested:

celery
mushrooms
raisins
coconut
nuts
salad greens
cabbage
olives
seeds
corn
peas
skins
cucumbers
pickles/relish
spinach
dried fruit
pineapple
green peppers
popcorn

Foods that may cause odors:

asparagus
fish
onions
beans
garlic
spicy foods
cabbage
green peppers
eggs
mustard

Foods that may produce gas:

apples
cauliflower
onion
avocados
corn
pimentos
beans
cucumber
radishes
beer
dried peas
sauerkraut
broccoli
green peppers
scallions
Brussels sprouts
leeks
shallots
cabbage
lentils
soybeans
carbonated drinks
turnips