Cloves are the dried, unopened, nail-shaped flower buds of the evergreen Syzygium aromaticum. They are reddish-brown in color and have a strong, aromatic flavor and aroma.
Clove is used for upset stomach and as an expectorant. Expectorants make it easier to cough up phlegm. Clove oil is used for diarrhea, hernia, and bad breath.