A normal cup of tea
What is a normal cup of tea, I hear you say? Considering there are about a million flavours and types, I hear you add? Well, believe it - there is such a thing as a Normal cup of tea. Actually, the normality of tea is so finely described that there are 21 ISO standards for tea!
an ISO - standard cup of tea
Please note that none of these ISO standards have been noded, as the standards themselves seem to be copyright protected. (I might be wrong, but I couldn't find the actual ISO standards for making tea anywhere).
*) This one (ISO 3103) is in effect the ISO standard version of "how to make a decent cup of tea". As a matter of fact, the BS 6008, which is the original 5000-word version of this document, written by the British Standards Institute, won a literature award! Silly britons.
Source: Accessing the ISO database and searching for random things - tea being one of them