Please choose the correct ending to complete the given sentence: Food and Entertaining: [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.

Ending1: [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. Ending2: [substeps] If you're cooking a variety of food, you may be able to purchase specialty icing mixes. If using a non-traditional icing processor, you could also consider making your own. Ending3: [substeps] You can pour in the water before or after the stockinette warmer to make for a smoother icing. If you use an electric mixer, be sure to use a strainer, just to get all the water from the bowl in one go. Ending4: Wait for the water to steam and the butter to melt, then mix on low heat again while taking care not to overheat it. Once the butter melts, remove the heat.

Answer format: ending1/ending2/ending3/ending4