27 CFR §24.101

1. (a)General. A person desiring to conduct operations involving untaxpaid wine, including the use of spirits in wine production, shall file an application and any required bond as provided in § 24.105. Further, a warehouse company or other person may, upon obtaining the consent of the proprietor and the surety on the bond (if a bond is required) and upon filing an application, as provided in § 24.108, and receiving approval, establish at the wine premises a bonded wine warehouse for the storage of wine and allied products for credit purposes.
2. (b)Authorized operations. Except as provided in this part, no operation may be conducted on bonded wine premises other than those authorized. The following operations are authorized:
   1. (1)The receipt, production, blending, cellar treatment, storage, and bottling or packing of untaxpaid wine;
   2. (2)The use of wine spirits in beverage wine production and the use of spirits in nonbeverage wine production;
   3. (3)The receipt, preparation, use, or removal of fruit, concentrated or unconcentrated fruit juice, or other materials to be used in the production or cellar treatment of wine; and
   4. (4)The preparation, storage, or removal of commercial fruit products and by-products (including volatile fruit-flavor concentrate) not taxable as wine.