November 26/Oklahoma City -- 'Tis the season for the return of mint to the flavor spotlight at restaurants all-around.  For a limited time, this December, Sonic guests can celebrate the holidays with the Chocolate Mint Holiday Shake. Sonic pairs its Real Ice Cream with chocolate, mints and whipped topping for this seasonal, premium treat that complements an entree or can be enjoyed as a stand-alone snack anytime.