When Simmering, a Small Bubble or Two Should Break Through the Surface of the Liquid Every Second or Two. If More Bubbles Rise to the Surface, Lower the Heat...
When simmering, a small bubble or two should break through the surface of the liquid every second or two. If more bubbles rise to the surface, lower the heat, or move the pot to one side of the burner. If simmering meat or large pieces of fish, place the food in cold water, and then bring it up to a simmer.
Should sauce bubble when simmering?
Simmer: A medium-low heat, with some gentle bubbling in the pot. The basic simmer is often used for soups, stews, sauces, and braises. Rapid Simmer: Medium- to medium-high heat, with more bubbling in the pot, but the bubbles should still be fairly small. Most often used for reducing sauces.
What does a simmer look like? To most easily gauge a simmer, simply watch the amount of bubbles rising from the bottom of the pot to the surface of your liquid. At a low simmer the liquid will have minimal movement with only a few, tiny bubbles rising intermittently, accompanied by little wisps of steam.