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 Commodity Code Description 21 02 10 Brewery yeast 21 02 20 Inactive yeast; other single-cell micro-organisms,dead 21 02 30 Prepared baking powder, packed for retail sale