1/3 c. oil (olive or vegetable)
1/3 c. lemon juice (other fruit juice, vinegar, wine or beer)
1/2 tsp. salt and pepper
1/2 tsp. Worcestershire sauce
1 tbsp. marjoram (any herb will do; use many, but keep to 2 tbsp.)
1/2 tsp. hot pepper flakes (few dashes of hot sauce)
1/3 c. minced onion
2 cloves garlic, minced (optional)
1/4 c. Ketchup (optional)

Mix together and marinate meat in refrigerator over night or at least 8 hours. Amounts are optional except for oil and juice. You can make it hotter or more mild. If you want a red marinade add the ketchup. Discard marinade after use. You can baste with it, but do not serve it as a sauce unless you bring whats left to a boil. It is best to make extra that you don't use as a marinade and use that for a sauce.