JAM MADE OF GREEN BLACK NUTS AND A METHOD OF ITS PREPARING Russian patent published in 1996 - IPC

FIELD: food industry. SUBSTANCE: matured and highly quality black nut fruits were treated in hot (85-90 C) 5% solution of caustic soda for 20 min followed by mechanical peeling, and washing with water. Then nuts were kept in hot water (45-55 C) for 10-12 hr at 2-fold water change, subjected for 5-fold blanching (by 15 min) in hot water (85-90 C) followed by blanching water removal, 2-4-fold boiling down, up to 55%. The first, second and third concentrations were carried out with sugar syrup, citric acid, and the second and fourth concentrations - at addition of residual sugar amount and cardamom, cinnamon and clove also at the following ratio of components, wt.-%: green fruits of black nut 55.1-55.5; sugar 44.1-44.5; citric acid 0.3-0.31; cardamom 0.012-0.013; cinnamon 0.035-0.037, and clove 0.043-0.05. EFFECT: high quality of jam.