Here's what I got about the required commissary as well.
TARRANT COUNTY
HEALTH DEPARTMENT
1101 SOUTH MAIN STREET
FORT WORTH, TEXAS 76104
http//:health.tarrantcounty.com
COMMISSARY GUIDELINE
FOR MOBILE UNITS AND CARTS
A commissary, as defined for the purpose of supporting a mobile food unit or food cart, shall meet the definition outlined in the regulations under Food Establishment. In addition, the commissary must be able to meet the following requirements:
1. Shall be a food service establishment, permitted and inspected by the Tarrant County Health Department or other Health Department recognized by the Tarrant County Health Department.
2. Shall have adequate storage space to house the cart or allow parking for the mobile unit.
3. Shall provide as a minimum a three compartment sink for the washing of pots, pans, utensils, and other such items used to hold or serve food and hold food contact items.
4. Shall provide dedicated space for the storage of dry goods, refrigerated foods, paper goods, and other items belonging to the mobile unit or cart owner.
5. Shall be an establishment that is accessible to the operator of the cart or mobile unit everyday at times agreeable to both the commissary owner and the mobile food unit/ cart owner.
6. Shall provide adequate equipment for the proper cooking or reheating of food.
7. Shall provide adequate space/equipment for the proper cooling of hot food.
The commissary must be able to meet the above requirements
and be approved by the Tarrant County Health Department. This department reserves the right to disapprove a submitted commissary if that location is deemed to be unable to meet the above requirements based on past inspections of the establishment.
This department reserves the right to waive any of the above requirements if the requirement is found to be unwarranted. This waiver will be recorded as part of the record.