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
Pot-au-feu serving. Traditionally, the broth is served first with a bit of nutmeg and the marrow (if a marrowbone was used) spread on toasted bread. Then the meat and the vegetables are served with coarse salt and strong Dijon mustard, horseradish sauce, and sometimes also with gherkins pickled in vinegar. "Pot-au-feu" broth may also be used as a soup (often enriched with rice, pasta or toasted bread), as a base for sauces, or for cooking vegetables or pasta. Ready-to-use concentrated cubes are available to make what purports to be "pot-au-feu" broth when water is added. Many countries have similar dishes with