Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to clean a stain off enamel ware [title] Boil water in your enamel cookware. [step] When you are cleaning a stain from inside your enamel glazed pot or pan, you can speed up the process by boiling water in the pan. You only need enough water to cover the surface covered with the stain and allow for evaporation when boiling.

Ending1: [substeps] If you have a pot you can boil the water in for a relatively short amount of time. If you have a stove that is the exact same shape, you can use a different piece of the pot. Ending2: [substeps] Make sure the water is safe for use on enamel cookware. Before you use it, check the manufacturer's instructions to find out what your appliance may potentially be able to handle. Ending3: [substeps] This method works well on food stains, but is not especially effective on rust. This method eliminates the need for an overnight soak. Ending4: [substeps] Vinegar and water can be saved in the vinegar mixture by putting a cotton swab in the pot to reintroduce the vinegar. Keep this in the water and let it come to a boil over medium heat.

Answer format: ending1/ending2/ending3/ending4