1. Empty the oven
Remove your oven racks, pizza stone, oven thermometer, and anything else you have inside the oven. Set aside.
Bowl of baking soda mixed with water, stirred with a spoon.
Credit: Diana Yen
2. Make a baking soda paste
In a small bowl, mix a 1/2 cup of baking soda with a few tablespoons of water. Adjust the ratio of both as needed until you have a spreadable paste. For me this took about 3 tablespoons of water to get the desired spreadable consistency.
