Propper Seltzer^® takes the guesswork out of hard seltzer brewing, allowing brewers to focus on the creative side of seltzers. For the quickest results, brew with your favorite Omega Yeast kveik strain. Propper Seltzer nutrient is dry and 7 bbl and 15 bbl sizes are packaged in an easy to use, resealable bag. Simply measure out the dose based on your batch size.