High-quality cloves are dried flower buds of the clove tree (Syzygium aromaticum) that have a strong, fresh aroma, high essential oil content, and a dark brown to reddish-brown color. They are whole, uniform in size, free from mold, insects, and foreign materials, and have not been excessively broken. When pressed, quality cloves release oil and feel slightly oily, indicating good freshness and potency.