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Omelette
An omelette is a dish made from beaten eggs, seasonings and sometimes water or milk quickly cooked with butter or oil in a frying pan and sometimes folded or topped with a variety of fillings including cheese, ham and vegetables.
Ovenproof dish
An ovenproof dish is simply a dish that is made from material that withstands the heat of an oven or microwave. Such dishes are likely to be made from thick glass or china, for example a casserole dish.