Hot sauce, chili sauce, or pepper sauce refer to any spicy sauce made from chili peppers and other ingredients. There are many varieties around the world. There are many recipes for chili sauces - the common ingredient being chili peppers. The peppers are infused in anything from vinegar, oil, and alcohol to fruits and vegetable pulp. Additional ingredients are often used, including those used to add extra heat, such as pure capsaicin extract and mustards. A powder is a dry, bulk solid composed of a large number of very fine particles that may flow freely when shaken or tilted. Powders are a special sub-class of granular materials, although the terms powder and granular are sometimes used to distinguish separate classes of material. In particular, powders refer to those granular materials that have the finer grain sizes, and that therefore have a greater tendency to form clumps when flowing. Granulars refers to the coarser granular materials that do not tend to form clumps except when wet.