5
Mexican Pizza sauce from Taco Bell
(self.fastfood)
Is it a regional thing or is my app glitching? I can't find an option to order a side of Mexican Pizza Sauce. You can add it directly to certain items but not just get a side to add/dip as you please. 
God I feel old and sad…
Back in the day it was just the standard red sauce. Like they use on burritos etc.
If they have changed it …?
I could be wrong but I'm pretty sure the red sauce and the Mexican pizza sauce have been different sauces sense the inception of the Mexican Pizza, originally called the Pazzaz Pizza. It is chunky and has bits of tomato in it. The red sauce on the other hand has a consistent viscosity.
Edit. Looks like the Mexican pizza sauce is likely a modified enchilada sauce. Still can't find if it has ever been red sauce on the Mexican Pizza.