Rev. Rul. 61-51

The use of `Yeastex,' a yeast food, to facilitate the fermentation of wine, in amounts not to exceed two pounds per 1,000 gallons of wine, is considered as being consistent with good commercial practice within the limitations of section 240.524 of the Wine Regulations. Winemakers desiring to use `Yeastex' in the fermentation of wine may receive the approval of the Assistant Regional Commissioner, Alcohol and Tobacco Tax, by the filing of an appropriate notice pursuant to section 240.1052 of the regulations.