This puzzle involves sandwiches and pasta dishes which list their ingredients in their names. The meals are:
Peanut Butter & Jelly
Chicken Bacon Ranch
Macaroni & Cheese
Spaghetti & Meatballs
Bacon, Lettuce, & Tomato
Beef & Cheddar
Sausage, Egg, & Cheese
Each ingredient is paired with a letter in the grid at the bottom of the page. Reading these from left to right gives SUGAR OR STARCH 4 LTR. “Sugar or starch” clues carbohydrate, with the “4 ltr” addition indicating the word must be shortened to CARB.