Hubby called me from the restaurant to say the food was great and that the owner came up to him to talk about the sourcing of his food.
The owner said that when the franchise first opened, McDonald's insisted that they only use McDonald's suppliers,
Business was not good and the owner told hubby that was because Mexicans won't eat meat that doesn't have good taste.
After McD's was ready to give up; he bought the license (franchise?) and now uses his own providers including grass fed beef from Sonora and now, business is very good.