The decoction process is a brewing method that involves boiling a portion of the mash and adding it back into the main mash to raise the temperature. It is commonly used in the production of certain styles of beer, such as German lagers. However, there are a few synonyms for this technique that are used in different contexts. For instance, in herbal medicine, the decoction process is referred to as boiling and simmering the herbs to extract their medicinal properties. Additionally, in the culinary world, the term "reduction" is often used to describe a similar process of boiling a liquid down to concentrate its flavor.