Infusion uses,like..

Chopped,and infuses on the water bath for 15 minutes into enamel dish,after to filter, cool for hour, and thick mass to press,leading his till a size needing with boiled water.
And takes one part of mass into 10 parts of water adding.
An infusions do not keeping for a long time,they are lost cure,thus keeping cooking a new for everyday.

And at home chopped mass ads in thermos with hot water to infuse for 5 hours, filter,ads a boiling water.