Definition of «to discard the water»

The phrase "to discard the water" means to get rid of or throw away the water without using it anymore.

Strain and discard the water from the boiled potatoes. (antoskitchen.com)
Once they are boiled, drain — but don't discard the water! (draggiematusik.com)
Always rinse and discard the water used for soaking as it contains tannins, dust and residue. (greenthickies.com)
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