Empirically, secang wood (Caesalpinia sappan L.) has medicinal properties and is consumed as a health drink. Secang wood contains tannin, gallic acid, brazilin, tannic acid, essential oils, polyphenols and sappanin. Switching people’s tastes from consuming the basic form of sappan wood to a more attractive and practical form, which is an herbal drink that contains the properties. The secang drink is measured by water and ash content. Water content is related to the stability index while ash content about minerals is filled. The initial probability of the quality of the secang herbal drink can be compared with that of both aspects. The lower the water content in a product, the better the quality, the higher the stability which can be further improved during storage. While the higher the ash content, the higher the probability of mineral content. Based on the analysis of water content and ash content, it is known that the simplicia of the secang wood is 1.542% while the water content of the herbal drink powder is 0.266%. Meanwhile, based on the analysis of ash content, ash content of simplicia secang bark is 9,449% while the water content of herbal beverage powder is 0,009%.