I once went six weeks without cleaning my microwave. When I finally opened the door to check, the ceiling looked like a topographic map of splattered pasta sauce. Brown, orange, and somehow a shade of green I did not recognize.

A friend came over, saw me attacking it with a sponge at full force, and said “Stop. You are making this way harder than it needs to be.” She walked me through her method. I have used it ever since.

The steam bowl method

Fill a microwave-safe bowl halfway with water. Add two tablespoons of white vinegar or the juice of one lemon, plus the squeezed lemon halves. The acid helps cut grease while the steam loosens everything stuck to the walls. Microwave on high for five minutes. Do not open the door for another two minutes — let the steam fill the cavity and work.

When you open the door, the interior will be fogged and warm. Take the bowl out carefully — it is hot. Now wipe. Everything wipes off with a damp cloth. No scrubbing. No scraping. The stuck-on tomato sauce, the mysterious green stuff, all of it slides off.

Why this works

Steam is incredibly effective at rehydrating dried food particles. Think about it: that sauce splatter was wet when it hit the wall, then it dried into cement. Steam turns it back into wet food splatter — which wipes away easily. The acid from lemon or vinegar simultaneously breaks down grease, which water alone cannot dissolve.

This is the same principle commercial oven cleaners use, minus the terrifying chemicals.

The turntable and door seal

While the steam is working, pop out the glass turntable and wash it in the sink. It is the easiest part to clean and it makes the whole microwave look better instantly. Also wipe the door seal — the rubber gasket collects food particles and, if left alone, can degrade over time. A damp cloth with a drop of dish soap is all it takes.

How often

I used to clean the microwave when it looked bad enough to bother me. That is the wrong approach. Now I do the steam method every two weeks whether it looks bad or not. It takes five minutes total from start to finish — two of those are waiting for the microwave to run. The more often you do it, the less there is to clean.