Copper sieve for preventing the scorching of mash for alembics.
During the distillation of the mash, heavier particles tend to settle at the bottom, and they often start to scorch. This can result in an unpleasant odor in the final product. The sieve serves as an excellent means of preventing scorching because it prevents heavy and coarse particles from coming into contact with the bottom of the distillation cube. By using the sieve, it becomes nearly impossible for the mash to scorch, allowing you to safely heat your cube.
Such a sieve is not always necessary. If you are distilling only liquids, it may not be required.