A trough is a rectangular bowl carved from one of the halves of a split log.
Troughs were of great importance in days of self-sufficiency, used mainly as milk- and baking troughs. Troughs used in contact with food had to be made from wood with little scent, like birch, aspen, spruce or sallow.
Today troughs are often used as serving bowls and are often painted and decorated with carvings.
Troughs are best hollowed using an adze and then finished with gouges or an inshave. The outer side is shaped with ax, draw knife and spoke shave. To facilitate work and avoid dry splits it is best to use green wood.