Spice rub the salt for flavor and the sugar for caramelization. The simplest rub is just coarsely ground black pepper as in steak au poivre. Spice rubs can also have ingredients such as herbs, crushed garlic or oil added to make a paste. Less common ingredients can include coffee beans. Spice rubs are mainly used for preparing meats and fish. There are many different recipes for rubs and most of them are targeted towards a specific kind of food. The exact combination of spices that makes a good rub for a particular kind of food varies from region to region and culture
Barbecue sauce released its barbecue sauce in 1940. Kraft Foods also started making cooking oils with bags of spice attached, supplying another market entrance of barbecue sauce. Different geographical regions have allegiances to their particular styles and variations for barbecue sauce. For example, vinegar and mustard-based barbecue sauces are popular in certain areas of the southern United States, while in the northern U.S. tomato-based barbecue sauces are well-known. In Asian countries a ketchup and corn syrup-based sauce is common. Mexican salsa can also be used as a base for barbecue sauces. The sauce for "asado", similar to barbecue in Argentina and Uruguay,