Yes, it is generally safe to reheat food in the microwave without using plastic wrap or placing a plate on top of the bowl. However, there are a few factors to consider:
Splattering: Without covering the food, there is a higher chance of splattering inside the microwave. This can create a mess and make the cleanup more difficult. To avoid splattering, you can use a microwave-safe cover or place a microwave-safe paper towel or microwave-safe lid on top of the bowl.
Heat distribution: Covering the food with a microwave-safe lid or plate can help distribute the heat more evenly, reducing the chances of hot spots and ensuring thorough reheating. It can also help retain moisture in the food.
Safety precautions: When reheating food without a cover, be cautious when removing it from the microwave, as the container may become hot. Use oven mitts or a towel to handle the bowl or plate.
It's important to note that using microwave-safe containers is crucial to avoid any potential leaching of harmful substances into the food. Always check that the containers you use are labeled as microwave-safe.