To Marinate is to soak food in a marinade. When marinating foods, do not use a metal container, as it can react with acidic ingredients and give foods an off odor and flavor. Always marinate foods in the refrigerator, never on the kitchen counter. To reduce cleanup, a nifty trick is to use a plastic bag set in a bowl or dish to hold the food you are marinating. Discard any leftover marinade that has come in contact with raw meat.
Or if it’s to be used on cooked meat, make sure to bring the leftover marinade to a rolling boil before using. This will ensure that you destroy any bacteria that may be present.