The joy of rattan.  

The important bit here is Steam Bending.

You place the piece of wood that you want to bend in a chamber (usually just a long pipe with lots of room) and once it has completely heated up to temperature of the steam you take it out and bend it into a jig that holds the shape while it cools. Usually this requires “over-bending” by about 10% because it will spring back some even after it has completely cooled.

There is quite a bit of skill in getting the wood hot enough (without cooking it) and (without burning yourself) bending it to a shape that will spring back into the shape you really wanted.