verjuice
/ˈvɜːdʒuːs/noun
mass noun
- a sour juice obtained from crab apples, unripe grapes, or other fruit, used in cooking and formerly in medicine（用沙果、未成熟的葡萄或其他水果制成的）酸果汁（用于烹调, 旧时用于医药）。
词源
Middle English: from Old French vertjus, from vert 'green' + jus 'juice'.