blanch

verb

• To grow or become white

  "His cheek blanched with fear."

• To take the color out of, and make white; to bleach

  "Age has blanched his hair."

• To cook by dipping briefly into boiling water, then directly into cold water.
• To whiten, for example the surface of meat, by plunging into boiling water and afterwards into cold, so as to harden the surface and retain the juices
• To bleach by excluding the light, for example the stalks or leaves of plants, by earthing them up or tying them together
• To make white by removing the skin of, for example by scalding

  "to blanch almonds"

• To give a white lustre to (silver, before stamping, in the process of coining)
• (tntransitive) To cover (sheet iron) with a coating of tin.
• To give a favorable appearance to; to whitewash; to whiten;