The serving guide is based on industry standard sizes.
Coffee/Finger portions are 1 x 2 inches x height of the cake.
Dessert/Generous portions are 2 by 2 inches x height of the cake.
We'd like to point out that our cake size refers to the diameter of the tin the cake is baked in and some slight shrinkage is expected during cooling. Your ready to decorate mud cake will vary ever so slightly in diameter from cake to cake.