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That's not where I want to spend the rest of my life. The basics of making extracts are very simple and straightforward: soak and cook in water, throw out the solid material, and you have an aqueous extract (a tincture). The solid material primarily is cellulose, while the tincture contains the pharmacologically active substances; the worldwide most widely used aqueous extract, or tincture, obviously is tea. You brew it to obtain the pharmacologically active ingredients (caffeine, theobromine) and discard the solid material (the leaves).
Last updated: December 18, 2011