Foods That May Cause Blockage (very bad, avoid!)
Apples, unpeeled (peeled and applesauce are excellent thickeners; don't eat the skins or the core, chew well)
Bean sprouts, Cabbage
Casing on sausage (inside fine if no tough parts, avoid swallowing if a chunk is felt). Also, sausage-like meats like pepperoni and salami contain indigestible bits.
Chinese vegetables (stir-fried crunchy, too hard, need very soft veggies with no skins)
Coconut, Coleslaw, Celery (avoid)
Corn (grits also, corn anything doesn't seem to dissolve in the stomach)
Cucumbers (skins bad, inside chewed up good seems okay, no seeds)
Dried fruit, raisins
Grapes, blueberries, etc. (skins and seeds are the problem.)
Green peppers (red, yellow also) pureed or very very small seems okay in small amounts
Mushrooms (don't dissolve in the stomach) pureed or very very small seems okay in small amounts
Nuts (totally avoid)
Peas (mushy interior okay, like pea soup, skins a problem)
Pickles (skins a problem, inside if chewed up good seems okay, seeds not)
Pineapple (liquid okay, mushy parts fine, hard parts not, rather risky as parts of mushy may not digest)
Popcorn (totally avoid)
Relishes and olives
Salad greens (diarrhea nightmare too)
Seeds and nuts (avoid)
Spinach (doesn't digest, pureed perhaps)
Tough, fibrous meats (for example, steak on the grill, well done, tough parts especially, over grilled chicken or dry pork chops. Juicy grilled or pan-fried chicken, shredded pork in juices, medium rare steaks, hamburger better.)
Vegetable and fruit skins (any avoid)
Whole grains (no grits, rolled oats oatmeal seems to be okay, oat cereal is an excellent thickener)
Foods That May Cause Gas or Odor
Alcohol, Apples, Asparagus (stink), Bananas, Beer, Broccoli (clog hazard)
Brussels sprouts (clog hazard)
Cabbage (clog hazard)
Carbonated beverages
Cauliflower, Cheese, some types
Corn (clog hazard), Cucumber
Dairy products
Dried beans and peas (clog hazard)
Eggs (don't digest in the stomach)
Fatty foods, Grapes
Fish (cooked salmon in small portions may not, nor stink, same for raw tuna)
Green pepper (red and yellow also, clog hazard)
Melons, Onions (clog hazard)
Peanuts (clog hazard), Prunes
Radishes, Turnips
Soda and sipping using straws (drink from glass instead)
Seafood (oh God, does it stink!)
If you're having pancaking issues, a small amount of something above (like having a soda during a meal) could introduce some air into your diet and thus into the bag. Also, by avoiding too many thickening foods by themselves which often contribute to pancaking.
Foods That May Help Relieve Gas and Odor
Buttermilk, Cranberry juice, Parsley
Yogurt with active cultures (Greek yogurt)
Foods That May Cause Diarrhea (looser or more frequent stool)
Alcohol (including beer)
Apricots (and stone fruits)
Beans, baked or legumes
Bran, Broccoli, Brussels sprouts
Cabbage, Caffeinated drinks
Chocolate
Corn (in my experience, corn anything doesn't digest in the stomach, just passed through and out, kernels/popcorn will clog)
Deep Fried meats, fish, poultry (KFC, supermarket rotisserie chicken very bad, and anything soaked in brine)
Fruit juice: apple, grape, orange (small amount okay)
Fruit: fresh, canned, or dried (small amount okay)
Glucose-free foods containing mannitol or sorbitol
Gum, sugar-free, Licorice
High-fat foods, High-sugar foods
High salt foods (KFC, supermarket rotisserie chicken)
Highly seasoned foods (like blackened)
Milk and dairy foods (small amounts okay)
Nuts or seeds (bad, clog hazard)
Peaches (stone fruit, one rarely okay)
Peas, Plums (stone fruit)
Prune juice or prunes
Soup, Spicy foods
Sugar-free substitutes
Tomatoes, Turnip greens/green leafy
Vegetables, raw
Wheat/whole grains, Wine
Rice (very soft 1/4 cup mixed in food okay), refried beans (1/4 cup okay), pasta (one cup max).
Any foods soaked in brine or deep fried (rotisserie chicken, Kentucky Fried Chicken, etc)
Solent nutritional meals
Foods That May Help Thicken Stool
Applesauce (unpeeled apples, no cores)
Bananas, Barley (when OK to have fiber)
Cheese (processed cheese food a clog problem, use real cheese)
Dried Chinese Crispy Noodles (severe thickening, mix with other food that causes diarrhea)
Marshmallows
Oatmeal (when OK to have fiber)
Pasta (sauces may increase symptoms) (in my experience, more than a cup of pasta causes diarrhea)
Peanut butter, creamy only, nuts clog (may make skin greasy)
Potatoes, no skin (skin clogs, more than a cup may cause diarrhea)
Pretzels (salty may cause more flow water consumption)
Metamucil, mix or crackers (mix in a cup of water and drink before it gels up)