The History of Beer and Wine Production At the time ... Gay-Lussac was interested in using the method to maintain grape juice wort in an unfermented state for an indefinite time.

Allowing your wort (unfermented beer) to ferment in direct sunlight is one of the biggest mistakes you can make when brewing ...

unfermented beer (aka wort) to promote carbonation and yeast activity. By boosting yeast contact and encouraging its settling ...