Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
   4      pounds        beef tri-tip roast
   1      tablespoon    butter
     1/2  cup           catsup
     1/4  cup           honey
     1/8  cup           Worcestershire sauce
     1/4  cup           onion -- minced
     1/8  cup           water
   1      teaspoon      salt
     1/2  teaspoon      black pepper
   3                    garlic cloves -- crushed, up to 4
     1/2  teaspoon      cayenne
     1/2  teaspoon      cumin

Preparation:

In a saucepan, combine all ingredients marinade ingredients, and allow to simmer over low heat for about 15 minutes. Baste meat with this marinade while grilling and use extra as a dipping sauce when serving. recipe from Alfalfa's/ Wild Oats in Colorad