Blackcurrant wash well. Orono nipples and put in a large saucepan. Flooded with water, enough to cover the fruit and cook about 30 minutes to crack the grains. Strain through cheesecloth, as nice drained fruit. To the resulting juice is added sugar in the ratio: 1 liter of juice - 2 kg of sugar and put on the stove to boil 3-4 minutes. Before you remove from heat put 4 g limontozu every 1 liter of juice. Pour into dry beer bottles, sealed with caps and sterilized 15 minutes. The fruits of blackcurrant outperform all berries and lemons 2-3 times more vitamin C - 120-320 mg%, which is stable and not readily degraded by processing the fruit. Contains large amounts of vitamin P, carotene, pectin and dyes and therefore products of black currant are among the mandatory food for astronauts.