The document summarizes the origins and ingredients of several dishes. Lasagna comes from Italy and is made of pasta, meat, tomato sauce, and cheese. Omelets are popular in the UK and can include ham, onions, leeks, and asparagus. Sweet and sour pork originated in China and contains pork, sugar, onion, garlic, pineapple, and soy sauce. Curry was developed in India and Thailand, and can include various meats and vegetables like broccoli and cauliflower.