Red Seal Cook

Answer: B - You would need roughly 10 kg of bones and 2 kg of mirepoix to produce 20 litres of stock. The generally accepted ratio of ingredients is 50 per cent bones and 10 per cent mirepoix, by weight. Therefore, 20 litres of water, 10 kg bones and 2 kg mirepoix will produce roughly 20 litres of finished stock. Although some liquid is lost to evaporation and during the straining process, the finished volume will remain roughly the same.