Simmer/ˈsɪmər/ Definition 1 of 3Pro Tip 1/3Cooking Technique Simmering is gentler than boiling; watch for small bubbles at the pot's edge. Remember to simmer the sauce to avoid burning it. Pro Tip 2/3Heat Control Adjust the heat to maintain the simmer and avoid rapid boiling. Turn the stove down low to keep the broth simmering. Pro Tip 3/3Cooking Time Food simmered too long may disintegrate; too short may be undercooked. Simmer the chicken until it's fully cooked but still tender.