While we refer to CCF as a tea, “tea” really means tea leaves, whereas a tisane refers to gently steeped herbs. When it comes to these seeds, however, much more dense and robust than delicate leaves, a decoction is required. A decoction “is a concentrated liquor resulting from heating or boiling a substance, especially a medicinal preparation made from a plant.” So whilst simply pouring hot water over these seeds as you would a tea will give you a touch of flavour (and slightly more benefits if those seeds were powdered), a good boil and simmer is required to make the remedy you require. A decoction should be roughly one part herb or spice (in this case seed) with 16 parts liquid, then reduced to half, a quarter or an eighth of the volume by simmering, depending on the potency you prefer.