So this last time, I was determined in those early craving days not to single-handedly support Taco Bell's operation especially since eating out is not frugal. So I made my own Baja sauce, I looked the idea up online and then worked at a version I didn't have to buy fresh produce for, I think it turned out well. (My hubby finds it especially good on turkey sandwiches.)
I forgot until just now that I have to make up some more that I didn't post it.
1 cup mayonnaise
1 T vinegar
1/2 tsp red pepper flakes
1/2 tsp onion flakes
1/4 tsp paprika
1/4 tsp black pepper
1/8 tsp garlic powder
1/8 tsp cumin
Mix together and chill in fridge for several hours before use to let the flavors penetrate.
(I think I might actually try sour cream here instead of mayo, but it wouldn't be as long keeping in the fridge if I did it this way. So only if I am going to use it in large quantities quickly would I try it. I like that the mayo version though since it lasts as long as mayo.)