Mix a tablespoon of baking soda with 33 ounces of water in a large cooking pot and bring to a boil. While the water is simmering, immerse your brass item or items and leave for 15 minutes. The lacquer coating should peel away. Fish out the brass using tongs or a large spoon, being careful to protect your hands, and rinse in hot water from the tap. Once cooled, wipe over the brass with non-oily acetone nail polish remover to get rid of any stubborn flakes. (Skip this last step if the item is brass plated.)
Started by mrs bouquet on Chatting on the Plot