as much as a dessert spoon will hold, usually reckoned at about two and a half fluid drams.

See also: Dessert

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
Lynn, from Liverpool, weighs 26 stone and has decided to have a stomach band fitted which will allow her to eat only portions the size of a dessert-spoonful.