Brewing Supplies Online offers Mr Beer, Black Rock, Morgan's, Cooper's, Mangrove Jack's, and Thomas Cooper's Craft beer kits as an essential feature of its home brew supplies. The body of home brew kits make approximately 23 litres when additional additives are used. To achieve a full flavoured beer the home brewer can: use two cans to produce a beer exactly as the craft brewer intended: often dubbed by brewers as a "Toucan" beer. Alternatively the brewer may add 1kg of powdered brewing malt or at least 1.2kg of liquid malt to their beer kit to produce a beer based on their beer kit malt. The exception is Mr Beer American Craft Series which does not require other additives. The volume produced by a beer kit may vary between manufacturers. Over 70 different home brew beer kit styles are available.