Ingredients

  • 3 (2 liter) bottles lemon-lime soda (such as 7 Up(R))
  • 20 fluid ounces soy sauce
  • 2 white onions, sliced
  • 2 lemons, sliced
  • 1 clove garlic, minced
  • 1 (3 pound) beef tri-tip roast

Method

  • Combine lemon-lime soda, soy sauce, onions, lemons, and garlic in a large pot; add roast.
  • Marinate roast in the refrigerator at least 24 hours.
  • Preheat grill to 250 degrees F (120 degrees C) to 300 degrees F (150 degrees C).
  • Remove the roast from the marinade and shake to remove excess moisture. Discard the remaining marinade.
  • Cook roast on the grill until desired doneness and an internal temperature of at least 145 degrees F (65 degrees C) are reached, at least 30 minutes.