Section 04 Prepared foodstuffs; beverages, spirits and vinegar; tobacco and manufactured tobacco substitutes 21 Miscellaneous edible preparations 21 02 Yeasts; other single-cell micro-organisms, dead etc; prepared baking powders 21 02 10 Brewery yeast 21 02 10 20 Brewery yeast Commodity Code Description 21 02 10 20 000 Brewery yeast