In a vegetable glycerine base. Just a dropper full into your bottle of water or favorite juice 2 - 3 times a day will give you all the antioxidant benefits of Rooibos. A convenient way to always carry your Rooibos with you - especially when you're on the go and don't have time to brew it. 1 dropper full is equivalent to at least 6 cups of Rooibos.