Beer. Beer would go great with food truck fare. I imagine cocktails probably would, too. And I know I want wine with my cupcakes and cookies from our sweet trucks in town.
Of course the Texas Alcoholic Beverage Commission prohibits roving food trucks to sell any sort of alcohol, because they don't meet the requirements to do so.
According to TABC permitting laws, in order to sell any sort of alcohol -- beer, wine or liquor -- a business must have a Retail Dealer's License. This license authorizes businesses "to sell beer for consumption on or off premises in a lawful container to the ultimate consumer but not for resale. Requires adequate seating area for customers."
So individual food trucks, being mobile and whatnot, can't provide seating for clients, and therefore can't sell booze. But what about food truck parks, which don't go anywhere and generally have ample seating and parking?
That gets a little more tricky. Just ask Liz Hale of My Food Park HTX.