Answer: spume
Spume refers to the airy foam or froth that forms on the surface of a simmering liquid—the light, bubbly wisps you skim off stocks, broths, or jams as they cook
Spume refers to the airy foam or froth that forms on the surface of a simmering liquid—the light, bubbly wisps you skim off stocks, broths, or jams as they cook