煮にやす

godan verb (-su), transitive verb

cook through; cook the inside

Rare or limited literal use for cooking something so that the inside is done. In ordinary modern cooking instructions, 煮る or 中まで火を通す is usually clearer.

• 「豆まめを芯しんまで煮にやす」とあれば、豆まめの内ない部ぶまで煮にて火ひを通とおすという意い味みになる。

  If it says “cook the beans through to the core,” it means to boil them until the inside is cooked.