Cal. Rev. & Tax. Code § 32201

An excise tax is imposed upon all distilled spirits sold in this state or pursuant to Section 23384 of the Business and Professions Code by manufacturers, distilled spirits manufacturer’s agents, brandy manufacturers, rectifiers, or wholesalers, or sellers of distilled spirits selling distilled spirits with respect to which no tax has been paid within areas over which the federal government exercises jurisdiction, at the following rates:

On all distilled spirits of proof strength or less, two dollars ($2) per wine gallon, and at a proportionate rate for any quantity, and on all nonliquid distilled spirits containing 50 percent or less alcohol by weight two cents ($0.02) per ounce avoirdupois, and at a proportionate rate for any quantity.

All distilled spirits in excess of proof strength, and all nonliquid distilled spirits containing more than 50 percent alcohol by weight, shall be taxed at double the above rate.