What does scumming mean?
Scumming is the present participle of “scum,” a verb meaning to remove a layer of scum, foam, grease, or other impurities from the surface of a liquid. It is associated especially with brewing, cooking, and processes in which floating material must be taken off before a liquid is clarified or continued. In everyday language, “scum” can also refer contemptuously to people regarded as contemptible or morally offensive, but “scumming” ordinarily refers to the physical act of skimming impurities from a liquid. The word is less common than the general verb “skimming,” although it can describe the same action more specifically when the material being removed is scum. For example, a brewer might be scumming a boiling wort, or a cook might scum impurities from simmering jam.
verbThe present participle of the verb “scum,” meaning to remove or skim off a layer of scum or impurities from the surface of a liquid.
- To remove or skim off scum or floating impurities from a liquid.
- To skim material from the surface of a liquid, especially as part of a cooking or clarification process.
"She was scumming the surface of the simmering syrup before adding the ingredients."
"The brewer was scumming the wort as it boiled."
"She scummed the impurities from the surface of the jam."
Scumming removes more than visible bubbles: it can lift off foam, grease, and other floating impurities from a liquid.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does scumming come from?
“Scumming” is formed from the verb “scum,” with the standard English present-participle ending “-ing.” “Scum” has been used since the early modern period for a layer of impurities or foam on the surface of a liquid; its deeper origin is uncertain. The related adjective “scummy” developed from the same source and can describe both scum-covered matter and, figuratively, something contemptible.
Related word forms
How scumming is actually used
“Scumming” is relatively uncommon and is most often used in cooking, brewing, or industrial processes. In figurative use, it can mean skimming a surface, but that sense is less frequent.