Section 04 Prepared foodstuffs; beverages, spirits and vinegar; tobacco and manufactured tobacco substitutes 21 Miscellaneous edible preparations 21 02 Yeasts (active or inactive); other single-cell micro-organisms, dead (but not including vaccines of heading 30.02); prepared baking powders Commodity Code Description 21 02 10 Brewery yeast 21 02 20 Inactive yeasts; other single-cell micro-organisms, dead 21 02 30 Prepared baking powders