Pour all of the ingredients into a mixing bowl and mix it all until it's fully combined.
Apply a binder like mustard or oil, then sprinkle the dry rub or marinade over the steak and then proceed to rub it into the meat.
You want to make sure that it's covering all sides of the cuts of meat. Place the tri-tip in a sealable 1-gallon freezer bag or airtight container, and then add the marinade.
Massage the marinade all over the tri-tip with your hands, remove excess air from the bag, and seal it securely, ensuring the marinade coats the meat.
Massage the marinade all over the tri-tip with your hands, remove excess air from the bag, and seal it securely, ensuring the marinade coats the meat. Refrigerate for a minimum of 3 hours, ideally 8-24 hours.
This will allow the flavorful marinade to really penetrate the cut of beef.
Notes
This is for a 3lb tri tip; if you're marinating a 1.5 lb tri tip, half the ingredients.