[header] How to make icing [title] Set a mixing bowl in a saucepan of simmering water. [step] Choose a saucepan large enough to fit a mixing bowl inside, fill it with a few inches of water, and set it on the stove over medium heat. When the water is simmering, place the mixing bowl inside. 
[substeps] Make sure that the water level isn't so high that you risk getting water in the mixing bowl. The water should not be boiling; if it begins to get too hot, reduce the heat.