A cordon bleu or schnitzel cordon bleu is a dish of meat wrapped around cheese (or with cheese filling), then breaded and pan-fried or deep-fried. veal or pork cordon bleu is made of veal or pork pounded thin and wrapped around a slice of ham and a slice of cheese, breaded, and then pan fried or baked. for chicken cordon bleu, chicken breast is used instead of veal. ham cordon bleu is ham stuffed with mushrooms and cheese.

Source: Wikipedia