I think my wife picked up some ciabatta buns or something similar. I’ve been to the Bay Area and you likely have access to some outstanding baked goods to serve the sammies up. Enjoy!
I’ve never used tri tip, but that thing is a beaute Clark! I always just pick up a cheap ole chuck roast. I be added 1.5 sweet onions and one each yellow, red, orange, and green bells and one Serrano deveined and seeded. I’ll just keep and eye on it and may or may not add some liquid when I cover it with foil at @150-165 IT. Finish at 200-205. I like some provolone and maybe some giardiniera for some Chicago style influence.
there’s a bunch of ways to enjoy the deliciousness.