Get rid of that gunk buildup! Simply stir 2 tablespoons of tartaric acid into 4 ounces of warm water for a quick and easy descaling solution. Within 30 seconds of contact, the deposits will dissolve, and you can either dump the solution out or store it for later use. To descale espresso machines, just run the tartaric solution through your system and dunk the steamer in it.

Your products scale because excessive calcium and sodium (a base) have deposited onto the metal. When a base reacts with an acid, like tartaric in this case, it quickly releases from the metal.