Chocolate gravy is a variety of gravy made with fat, flour, cocoa powder and sometimes a small amount of sugar.
Cream gravy or country gravy is made with one to one and a half cups of milk added to the roux. It is seasoned with salt and pepper. It is common to the American South and is frequently served with chicken fried steak.
Egg gravy is a breakfast gravy that is served over biscuits. Meat drippings (usually from bacon) and flour are used to make a thick roux. The roux is salted and peppered to taste. Water and milk (even parts) are added, and the liquid is brought back up to a boil. A well-beaten egg is then slowly added while the gravy is stirred or whisked swiftly, cooking the egg immediately and separating it into small fragments in the gravy.
Giblet gravy has the giblets of turkey or chicken added when it is to be served with those types of poultry, or uses stock made from the giblets.
Onion gravy is made from large quantities of slowly sweated, chopped onions mixed with stock or wine. Commonly served with bangers and mash, eggs, chops, or other grilled or fried meat which by way of the cooking method would not produce their own gravy.
Red-eye gravy is a gravy made from the drippings of ham fried in a skillet/frying pan. The pan is deglazed with coffee. This gravy is a staple of Southern U.S. cuisine and is usually served over ham, grits or biscuits.
Vegetable gravy or vegetarian gravy is gravy made with boiled or roasted vegetables. A quick and flavorful vegetable gravy can be made from any combination of vegetable broth or vegetable stock, flour, and one of either butter, oil, or margarine. One recipe uses vegetarian bouillon cubes with cornstarch (corn flour) as a thickener (cowboy roux), which is whisked into boiling water. Sometimes vegetable juices are added to enrich the flavor, which may give the gravy a dark green color. Wine could be added. Brown vegetarian gravy can also be made with savory yeast extract like Marmite or Vegemite. There are also commercially produced instant gravy granules which are suitable for both vegetarians and vegans.
White gravy (sawmill gravy in Southern U.S. cuisine) is the gravy typically used in biscuits and gravy and chicken fried steak. It is essentially a Béchamel sauce, with the roux being made of meat drippings and flour. Milk or cream is added and thickened by the roux; once prepared, black pepper and bits of mild sausage or chicken liver are sometimes added. Besides white and sawmill gravy, common names include country gravy, milk gravy, and sausage gravy.