Okla. Stat. tit. 37A, § 37A-2-112: Caterer license

A caterer license shall authorize the holder thereof to sell

mixed beverages for on-premises consumption incidental to the sale

or distribution of food at particular functions, occasions or events

which are temporary in nature. A caterer license shall not be

issued in lieu of a mixed beverage license. A caterer license shall

only be issued in counties of this state where the sale of alcoholic

beverages by the individual drink for on-premises consumption has

been authorized. A separate license shall be required for each

place of business.