= I =
ISO standard cup of tea n.
[South Africa] A cup of tea
with milk and one teaspoon of sugar, where the milk is poured into
the cup before the tea. Variations are ISO 0, with no sugar; ISO
2, with two spoons of sugar; and so on.
This may derive from the "NATO standard" cup of coffee and tea
(milk and two sugars), military slang going back to the late 1950s
and parodying NATO's relentless bureacratic drive to standardize
parts across European and U.S. militaries.
Like many ISO standards, this one has a faintly alien ring in North
America, where hackers generally shun the decadent British practice
of adulterating perfectly good tea with dairy products and
prefer instead to add a wedge of lemon, if anything. If one were
feeling extremely silly, one might hypothesize an analogous `ANSI
standard cup of tea' and wind up with a political situation
distressingly similar to several that arise in much more serious
technical contexts. (Milk and lemon don't mix very well.)
[2000 update: There is now, in fact, an ISO standard
3103: `Method for preparation of a liquor of tea for use in sensory
tests.', alleged to be equivalent to British Standard BS6008:
`How to make a standard cup of tea.' - ESR]
--The Jargon File version 4.3.1, ed. ESR, autonoded by rescdsk.