Examples from the Web for underripe
Too great a degree of acidity in canned tomatoes may be due to climatic conditions or overripe or underripe product.Every Step in Canning|Grace Viall Gray
Use no water with cultivated grapes, but with underripe wild grapes, cup of water may be added to each quart of stemmed grapes.
Potatoes, underripe, green potatoes are unfit for food; they contain a poisonous substance which renders them actually harmful.
Wild grapes are preferable, but underripe Concords, Catawbas, and other varieties may be used.