Yes, you can use aluminum foil facing to wrap vegetables or fruits before roasting or grilling. Aluminum foil is a common and safe method for cooking food as it retains moisture and heat, allowing for even cooking. However, ensure that the foil does not come into direct contact with the heat source for extended periods to avoid any potential risk of aluminum leaching into the food. It's also important to use heavy-duty aluminum foil for cooking to prevent tearing or puncturing during the cooking process.