Yes, you can use aluminum foil to wrap hot soup or stew, but with caution. Aluminum foil is a good conductor of heat and can help distribute heat evenly. However, it's important to ensure that the foil does not come into direct contact with the heat source as it can melt and potentially contaminate the food. Use a layer of parchment paper or a thicker oven-safe material between the foil and the heat source to prevent burning. Also, be aware that aluminum foil can tear easily, so handle with care to avoid spills.