Vitamin B complex: a substance made up of a group of water
soluble vitamins in the B group each of which has different effects.
Most of the B group vitamins are easily destroyed by cooking and processing.
Cooking with water reduces most of the vitamin b group for two reasons; firstly
the heat is very destructive to this fragile group of vitamins and secondly as
they are almost all water soluble what is not destroyed by the heat is diluted
by the water.
Although individually the b group of vitamins are present in many foods it is
only in liver, kidneys and brewer's yeast that most of the b group vitamins are