Burnt-on food residue in the microwave is the number one problem for 70% of homemakers. Did you know that even the most troubled Samsung MS23F301TFW can be cleaned in just three minutes? Take a 500 ml heatproof bowl. Pour 250 ml of plain water into it. Add four thick slices of fresh lemon, preferably Meyer, known for its juiciness. Place the bowl in a microwave, such as the LG NeoChef MH6539HRS, and turn on high power. 2-3 minutes is enough for the water to boil and the steam and citric acid to begin softening the fat. The secret to its effectiveness is steam: hot steam softens dried-on particles, and citric acid, a powerful natural disinfectant, breaks down grease. It's safer and 10 times cheaper than chemical sprays. After turning off the microwave, leave the bowl inside for 5 minutes to cool. Then simply wipe all surfaces with a damp sponge. Your Daewoo KOR-6LBC microwave will shine like new!