Asahi Kasei cooking sheet is Japans number 1 cooking paper for oven and microwave cooking. Our cooking sheet is heat resistant and stick free, allowing you to bake the stickiest things without any fear of them not coming off the sheet. Heat resistant (250c for 20 minutes) provides versatility for use in both the oven and microwave. Simply pull out required amount of foil from roll, close box, hold flap down tight and tear along the cutter edge. To use for oven cooking, lay sheet on oven tray with dough or ingredients on top and place in oven to bake. To use for microwave cooking, tear of a square and place food to be cooked in the middle part of the sheet. Bring diagonal corners of the sheet corners together. Fold the corners 2, 3 times on one side tightly and press down. Twist the other two ends tightly like a candy wrapper so that the content does not leak while cooking. Place it on a plate and cook in the microwave.