Bitterballen (plural of bitterbal) are a Dutch meat-based snack, made by making a very thick stew thickened with roux and beef stock and generously loaded with meat, refrigerating the stew until it firms, and then rolling the thick mixture into balls which then get breaded and fried. Seasonings in the base stew usually include onions, salt and pepper, parsley and nutmeg. Most recipes include nutmeg and there are also variations using curry powder or that add in finely chopped vegetables such as carrot.