The De Troch Lambics are brewed by age-old methods which depend on spontaneous fermentation. The wort is cooled in shallow, open-air vats (coolships) which exposes the brew to micro-organisms giving Lambic its unique flavor. After this process the ale is aged in casks for at least one year completing the spontaneous fermentation process. Detroch is located in the heart of the government protected appellation, Pajottenland region in south Brussels.