You need to replace the white sauce with Santa Maria Salsa (this recipe looks pretty accurate: https://www.seriouseats.com/santa-maria-style-salsa-recipe) served over the steak, and I trust those are Pinquito beans?
Now in the Northeast, but spent years in Santa Maria. I miss oak bbq'd tri-tip.
I like the tangy white sauce better on tri. we always got the salsa for others of they want it!
Crazy, I just finished serving up a big Santa Maria style BBQ and was just coming to post some pictures from it.
tangy horseradish sauce (horseradish, sour cream, lime juice, course pepper, and tapatío)