Introducing Escarpment Labs Yeast from Canada! Yeast Lightning is their special yeast nutrient blend that has been formulated particularly for beer yeast. Each 28g (1 oz) package offers enough nutrients for up to 28 batches of homebrew (dosed at 1 gram per 5 gallon batch. Yeast Lightning can also be used for Hard Seltzers and Ciders as well! Stress less about yeast health with Yeast Lightning from Escarpment Labs!