"fill a meal plan properly" is a good way to look at it. Can you eat the national cuisine every day of the week. This is definitely a test where Americans fall down, not because there's no food but because so much American food is borrowed and then bastardized. I could have English muffins, yogurt parfaits, omelets and oatmeal for breakfast, sandwiches, burritos, quesadillas and sushi for lunch, then spaghetti, roast chicken, burgers and pizza for dinner and ostensibly only two of those meals are "American" but everything else is an American version so mutated from where it started that its owners wouldn't recognize it. You can't properly call it "American cuisine" because so much of it has been borrowed. And even then, you would definitely be better off eating in France or Italy.