I usually buy: eggs, reduced fat feta cheese, low fat shredded mozzarella, and reduced fat provolone slices, plain light soymilk, yogurt, hummus, canned beans, artichokes and heart of palm, also canned diced tomatoes, frozen foods like veggie burgers and morningstar sausage patties. tuna (the kind in the foil bag, not the can!) tofu, sliced tofurky. and tons of fresh veggies. mushrooms and spinach for my eggs, stuff for salads, to make tomato sauce, and to cut up and dip in hummus. i also buy natural PB, and sometimes sunflower seeds or mixed nuts. oh, and NSA fudgesicles we buy fish fresh from the market the day we plan to cook it. I'm mostly vegetarian, although I also eat seafood dairy and eggs.
when i first started out with sb, i found it was helpful to plan out my meals for the first few weeks, and base my grocery list on the meal plan. now i just buy a bunch of stuff i know i'll eat, and anything else that looks good to make up a meal later. hope this helps!
I always consult the P1 foods to enjoy list like the others have suggested, but I shop according to my preferences and this is my list and it almost never changes unless I need a change which is rare (grayed out is my P2 so ignore that).
Egg Beaters (Costco)
Turkey bacon
String Cheese or Barbel Lite Cheese
Mixed Greens (Costco)
Broccoli
Beans (dried)
Cauliflower
Water
Green Beans (french style)
Chick Pea Hummus Grapefruit
Fat Free Turkey Deli (Butterball thick sliced from Costco)
Salmon (fresh)
Tuna (canned)
Tilapia (fresh)
Sugar-free Jell-O Reduced Fat Triscuits Green Giant Vegetable Medleys (frozen)
Cucumbers (Costco)
Scallions
Mushrooms
Sprouts
Shrimp (fresh) Boca burgers/chicken patties (Costco) Cereal (I only eat Shredded Wheat Original)
1% milk 100% Whole Wheat Bread
Chicken Breast (thin cut)
Lean ground turkey (to make turkey burgers)
Sugar-free Fudgesicles Healthy Choice meals (for when I don’t want to cook)
Extra Virgin Olive Oil
Red Wine Vinegar
Oregano
Low-sodium salt
Pepper
Smucker’s All Natural Peanut Butter (chunky) Slim Fast
Powerade Zero
Salt-free Sazon
Your best bet is to remember to shop the edges. Most grocery store have all of the "whole" foods on the edges of the store. Produce, dairy, eggs, meat. You need to stay away from the packaged and pre-made stuff (for the most part). Doing this usually keeps me out of trouble.