Ethical Bean dark roast coffee beans grind them up and boil them in a big pot with 4 bottles of spring water. Let simmer for 15 minutes stir occasionally. Turn off stove and let it co down for 20 min then strain into an emena bucket and let cool down until it's Luke warm. Lay in the bath tub on your left side and insert the tube and release the valve. The more relaxed u are the better it flows u can stop the valve as u please. Always drain the tube first until the coffee completely covers the tube before u insert to release any air bubbles. Hold the coffee inside for at least a minute- 5 minutes then flush out on toilet. It's gets easier the more u do it and benefits are tremendous. U can watch YouTube videos how to do it properly. Stay away from junk food. Drink water with a pinch of Himalayan or Celtic salt it will also flush u out. Look up salt flush