Lay's Fried Crab flavor ingredients typically include potatoes, vegetable oil, and a seasoning blend with sugar, salt, MSG, soy sauce powder, yeast extract, garlic, chilli, and various flavor enhancers (like E635) and acids (E330) for a savory, slightly spicy, umami taste, often with real crab (Crustacean) or clam powder for seafood notes, but can vary slightly by region. Key allergens often listed are soy and wheat, with potential for milk, and sometimes contains aspartame (E951).