What is a substitute for kieselsol?

A common substitute for kieselsol, which is used as a fining agent in winemaking and beer brewing, is bentonite clay. Bentonite performs a similar function by clarifying and stabilizing beverages by binding with suspended particles. Another option could be Gelatin, which is also used as a fining agent, though it may not be suitable for vegan or vegetarian products. Always consider the specific requirements of your application when choosing a substitute.