what does water do when it boils
Turn down the heat. High heat is useful when you want to get the water to reach boiling temperature quickly. Once you've got where you want, reduce the heat to medium (for boiling) or medium-low (for simmering). Once the water is at a rolling boil, more heat will only make it boil away faster.1  Check on the pot occasionally for the first few minutes, to make sure the water is stable at the stage you want it.he water is ready when it's steaming and too hot to touch. 1  If the water is still cool after the first couple minutes, increase the length of each session to 1.5 or 2 minutes. 2  Don't expect a rolling boil in a microwave.