YeastBeast Enriched Brewer’s Yeast is a high-grade yeast and grain blend that is formulated for compatibility with drosophila culturing. It is very high in B-vitamins, selenium, potassium, protein, and contains a wide amino acid profile, as well as complex carbohydrates optimized for fly production. Added vitamins and minerals. 

An essential component for both D. melanogaster and D. hydei fly cultures but is especially necessary for D. hydei.