clabber

/ˈklæbər/
noun
  1. Sour milk that has naturally thickened or curdled, sometimes eaten as a food.
    • Clabber has a tangy taste similar to buttermilk.
    • In the old days, people made clabber by leaving milk out to sour.
    • She spread clabber on her bread like yogurt.
verb
  1. To curdle or thicken, especially of milk.
    • If you leave milk out too long, it will clabber.
    • Farmers used to let milk clabber naturally to make cheese.
    • The heat caused the cream to clabber in the bowl.
Synonyms
What does "clabber" mean? | whatsthatwordmean | whatsthatwordmean