If you want to make your own buy the chipped root, when it arrives make sure some of it has visible bark, if there is no bark it could already be denatured (already used for its extract, then redried and sold to you). Measure out 200gms, put in a pan and cover with spring water. Leave it to soak for at least 48 hours. Then bring to boil, let it boil for 15 minutes and turn off heat, let it rest for one hour, then repeat (boil 15 mins) and keep on repeating until the Ali root softens, then start draining the root and removing, keep doing the boiling process too. When you have removed most of the root (put all that root in the garbage), and have boiled until almost no water is left on the remaining root, take the remaining damp root out and leave to sun dry. Once dry, grind to powder and weigh this powder. If you have 1grm of root left you have made 200:1, if you have 10grms you have 20:1 etc.