This is not for drinking our self. This is for giving your vegetable or household plants some Comfry organic fertilizer. The nitrogen-phosphorus-potassium (NPK) ratio of dried comfrey leaves is 1.8-0.5-5.3; comfrey also contains calcium.
All you do is pull of some of the leaves with the stem. comfrey leaves can irritate the skin, so wear gloves. Add some of the flower parts dry or green. Once you have enough for your bucket. You compress them down with some weight. A brick , board or rock will do. Add water to fill.
When you go to use it. Dilute 1/2 and 1/2 with water. Or thin to 1 part comfry 9 parts water. It is up to you how strong you want to use it.
You can also use the leaves as a mulch.. Or bury the leaves about 2 inches under the soil. It will break down quickly.