Cooking utensil having boil-control member

A combination comprising:

• a cooking utensil having a substantially planar base and an upstanding sidewall connected to the base to form a container for cooking a liquid;
• a liquid disposed in the container, the liquid being capable of boiling when exposed to heat, and having such a depth in the container as to be suited for boiling over the top edge of the sidewall;
• and
• a thin, substantially planar boil-control member disposed in said liquid on the base of the cooking utensil in a substantially face-to-face relationship with the base, said boil-control member having a permetric edge disposed in substantially the same plane as the mid-section of said member and a pattern of perforations so formed as to prevent the liquid from boiling over the top edge of the utensil sidewall at the time that the utensil base is exposed to heat.