Latin word cerevisia comes from Proto-Indo-European *ḱh₁erh₂-, and later Proto-Celtic *kormi (Beer.)
*ḱh₁erh₂- (Proto-Indo-European)
*ḱr̥h₃m- (Proto-Indo-European)
*kormi (Proto-Celtic)
Beer.
curmi (Gaulish)
cerevisia (Latin)