How do I cook of root burdock?

And of root cooks a powder and decoction,as to prepare till two packets of roots, one for powder,and next is for decoction, and take from  grind earth,clean,and chop, and later he will a dry,hard. And for powder,as root, ads ultraviolet, and uses one tea.sp./daywith water as for three methods.

For a decoction as two tbl.sp. root  chopped ads into one l. of water, boil 30 minutes in enamel pot, closed, on weak fire, and hour for to infuse, drinks half glass for 5 times/day  as non-meal depending.

Chopped root ads into 0.5 l. of water, boil 30 minutes, infuse hour, uses for 5 times/day.

And for restore cartilage faster a powder,and decoction uses at the same time, as long time use till a few months to years.