The Whole Bowl
There is a small restaurant (that started as a food cart) here in Portland called: "Whole Bowl".
The ingredients are basically a burrito, but without the tortilla wrap.
Brown rice, red and black beans, cheddar cheese, avocado, onion, cilantro, salsa, sour cream and and addictive mustard yellow sauce they call: Tali Sauce. Locals also call this sauce "Crack" sauce as it is something you just want to keep eating.
I did some digging around on the interwebs and came up with a recipe that is close to the original. If you are going to the trouble to put this sauce together go ahead and scale it up.....this stuff seems to disappear way too fast.
(Almost) Tali Sauce
Blend all the ingredients in a food processor and then add 1 tsp each of:
Blend again until combined and serve with your bowl ingredients.