Definition of boil something down in English:

boil something down

Reduce the volume of a liquid by boiling: they boil down the syrup until it is very thick
More example sentences
  • Meanwhile the cooking liquor would be boiled down to make a thickened gravy.
  • The amount of red wine the recipe called for seemed rather too small to me, so I used more wine - about three times as much - by boiling it down to the same volume as indicated in the recipe.
  • Skim the fat from pan juices, and reduce the drippings by boiling them down to a delicious sauce.
Synonyms
condense, concentrate, reduce, distil, thicken, compress; strengthen
See parent entry: boil

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Word of the day ween
Pronunciation: wiːn
verb
be of the opinion; think or suppose