The spice grows on tropical evergreen trees that can live to be 75 to 100 years old. The tree can reach a height of up to 25 metres. Cloves are the unripe flower buds of the tree, they are about 2.5 cm long and have thick stems. When harvested, they are olive green in colour and can change to reddish during ripening. After drying, the colour changes to red-brown to brown-black, depending on the variety and origin.
The taste of cloves is sunny, spicy, sharp/hot and leaves a narcotic sensation in the mouth. The smell of the spice is also very aromatic, with an initial sunny, characteristic smell.