Plants or herbs considered as curative may be prepared  in different ways, and it is very important that the person who uses this curative  system, knows its differents ways  of preparation  and consumption.
The tea preparationmust be done separatelly, that is to say, leaves and flowers  are not cooked  together with stems  and roots.
The herb teas  must be drunk  in the morning, fast before breakfast; or by night  before going to bed.
Never use  metal utensils, but  drinking vessels  made of clay, crokery  or enamelled  vessels  to prepare tea.
Teas must not  be sweetened  with sugar, the best is to drink them in a natural way. However teas must be sweetened  with honey which is also a curative agent.

Tea:
Tea can be prepared in different ways, such as:

*  Tisana: Some water is boiled in a covered vessel. In ebullition, herbs are incorporated .The vessel is covered  again and this tisana is boiled for 5 minutes more, later the herbs  are strained and then  the tisana is ready.

*  Infusion: This process consits  of pouring out boiled water  on the herbs  in a vessel, then cover the vessel  and leave  the infusion  for ten minutes. This preparation  is more appropiate for leaves and flowers.
Stems and roots can be prepared by infusion too but they must be well minced  and they must be left in repose for 30 minutes.

*  Coction: Herbs  are put  in a vessel, cold water is poured out on them.They are cooked  from 5 to 30 minutes  according to the type of  herb which is being prepared.
For cooking leaves, flowers or soft parts of the plant  only 5 or 10 minutes are enough.
Roots, rinds, stems are well minced  and they must be cooked  for about 15 or 30 minutes.When the vessel is moved back fron the fire, the vessel must be covered for some minutes  and later the coction  must be filtered.

*  Maceration: Herbs are soacked in a vessel  with cold water from 10 to 24 hours, according to the parts of the plant. Flowers, leaves, seeds or soft parts of the plant are soacked from1o to 12 hours; the minced stem, rinds and soft roots are soacked form 16 to 18 hours.
The hard  stem, rinds and hard roots are minced  and they must be soacked fron 22 to 24 hours. This maceration must be filtered.

(*)  Information taken from:
"LAS PLANTAS CURAN"
Authors:  * Alfonsas Balbachas
               * Herminio Rodríguez R.
4th edition. Editorial "La Verdad Presente"
Argentina.