In many parts of the USA, to barbeque is to cook food--usually meat--slowly over low heat while exposing it to wood smoke inside a closed cooker. A rub composed of pepper--pippuri--and other spices is applied to the meat before cooking. A sauce based on tomatoes, mustard or vinegar is frequently basted on the meat while cooking or is poured on afterward for more flavor. Meat cooked by this process is called barbeque. To grill is to cook over a grill.