The most popular marinade is made up of equal quantities of tomato
ketchup and vegetable oil (enough of these two to cover all of the meat), a finely chopped onion, crushed garlic (a little, just enough for the flavor from the garlic to blend into the overall taste, but not enough to be a distinct taste), chopped red chillies (enough for a spicy
tang), and some sugar (not more
than a tablespoon).