What is another word for Top fermentation?
Pronunciation: [tˈɒp fɜːmɪntˈe͡ɪʃən] (IPA) 
Top fermentation is a process used in brewing beer in which the yeast strains used float to the top of the fermentation vessel to form a thick, creamy head. Synonyms for top fermentation include high fermentation, surface fermentation, and open fermentation. High fermentation is commonly used in British and Belgian styles of beer, while open fermentation is a technique that involves leaving the beer exposed to the air, creating a distinctive flavor and aroma. Surface fermentation refers to the fact that the yeast forms a surface layer on top of the beer, while top fermentation is generally used to describe the process as a whole.
