The complaint about microwaves heating up the plate more than the food is a common observation and can be attributed to a few factors related to how microwaves work and how heat is distributed in the microwave oven:
Uneven Distribution of Microwaves: Microwave ovens use a magnetron to generate microwaves, which are then distributed throughout the cooking chamber. The microwaves are reflected and refracted by the metal walls, and they create standing waves. These standing waves can result in areas of higher and lower intensity, leading to uneven heating within the microwave.
Plate Material: The type of plate used can also impact how well it absorbs microwave energy. Plates made of microwave-safe materials, like glass or ceramic, tend to absorb less energy and, as a result, might not heat up as much as the food. However, if the plate contains materials like certain types of metal, it can absorb and retain more microwave energy, leading to a hot plate.
Food Composition: The composition of the food itself can affect how well it absorbs microwave energy. Foods with a high water content tend to absorb microwaves more effectively and heat up faster. In contrast, foods with lower water content, like some baked goods or certain types of meat, might not absorb microwaves as readily and can remain cooler.
Standing Time: After microwaving, it's essential to let the food stand for a short time. This standing time allows for more even heat distribution within the food, as heat continues to conduct from hotter to cooler areas.
To improve the overall microwave cooking experience and minimize the issue of uneven heating, consider the following tips:
Stir or Rotate: If possible, stir or rotate the food during the microwaving process. This helps to distribute heat more evenly.
Cover the Food: Use a microwave-safe lid or microwave-safe plastic wrap to cover the food while cooking. This helps to trap steam, which aids in even cooking.
Arrangement of Food: Ensure the food is spread evenly on the plate and not stacked too high, which can hinder uniform heating.
Microwave-Safe Dishes: Use microwave-safe dishes and avoid plates with metal elements or decorations, as they can cause uneven heating.
Lower Power Setting: For some dishes, using a lower power setting can help achieve more even heating. It allows the microwaves to penetrate the food more thoroughly.
Despite these strategies, it's important to recognize that microwave cooking does have its limitations, and certain dishes are better suited for traditional cooking methods to achieve desired textures and results.