What licenses do you need to open a drive through restaraunt in texas?
In the State of Texas, there are several required permits to operate a restaurant. They include:
Sales Tax Permit to collect applicable sales tax as required by law
Facilities Permit to ensure the restaurant is up to code, zoned properly etc.
Certified Food Manager Permit to ensure proper handling protocol for all food
Retail Food Establishment Permit to ensure the restaurant has the proper equipment
Source: http://smallbusiness.chron.com/four-permits-needed-open-restaurant-texas-37204.html
More information can be found here