A method for processing sugarcane juice from raw sugarcane stalks to produce various forms of a natural sugarcane juice product preserves policosanols naturally occurring in the raw sugarcane stalks, resulting in policosanol-rich natural sugarcane juice-based products such as a drinking beverage, a concentrated sweetening agent, and a nutraceutical product. The method may include steps of providing sugarcane stalks having high policosanol concentrations； extracting sugarcane juice from the sugarcane stalks via a series of roller mills； filtering the extracted sugarcane juice； stabilizing the pH of the juice in a non-acidic solution of calcium hydroxide； flocculating the sugarcane juice to remove undesirable impurities； optionally, evaporating the sugarcane juice to form a policosanol-rich sugarcane juice concentrate and extracting the sugarcane juice concentrate from the evaporator.
