I usually make the following sauce when I make Tri-Tip:
Habanero Lime Garlic Crema
Time: 10 minutes
- 1/4 cup sour cream or Mexican crema agria ("agria" meaning sour)
- 2 Tablespoons to 1/4 cup chopped cilantro (stems included) depending on how much cilantro flavor you like (optional if you hate cilantro of course)
- 2 Tablespoons mayo
- 1 habanero, rough chopped (habis, as they're affectionately called in our house, are VERY hot. If VERY hot is not your thing, you might try using just an eighth or quarter of the pepper to start.)
- 1/2 teaspoon minced garlic (about 1 very small clove)
- 1 tablespoon fresh squeezed lime juice
- 1/8 teaspoon salt
- 1 teaspoon lime zest (optional) Zap everything in a blender for 20 to 30 seconds. Donezo!
http://chezshinae.blogspot.com/2014/01/habanero-lime-garlic-crema.html
The next day, I spread some of that crema on a nice crusty bread like Sourdough, add several thin slices of cold Tri-Tip, ok, a lot of slices, and some Jack cheese, and I am good...