yeast / supplement (microbial) · ingredient
Origin class: microbial (stated); fermented-product type: yeast / supplement. status_condition: yeast recovered as a by-product of beer brewing; may retain residual beer and khamr contact, so doubtful. Madhhab note: the yeast itself is permissible, but brewing-derived brewer's yeast may carry residual beer, so conservative doubtful; nutritional/primary yeast is preferable. Aggregation methodology, not scholar-ratified.