Chocolate and cocoa both contain tannin and theobromine, a stimulant resembling caffeine chemically, though less marked in its stimulating effect-therefore, it should be given to children only in a weak form. The Complete Beverage Dictionary Beverage Tips 1. Keep tea and coffee in closely covered containers. Do not use tin tea or coffee pots. Do not let tea or coffee stand on grounds long after it is made.
Coffee is best if freshly roasted, freshly ground, and freshly made.
Do not reheat coffee. Serve as soon as possible. Black tea and black coffee have no food value. Drip coffee contains less tannin and more caffeol than other coffee.