The Walrus' posting reminded me (sort of) of the tea drunk by loco crews on Britain's steam railways.
They would put a spoonful of loose tea, a spoonful of sugar and some condensed milk (which is, as you will all know, very thick and glutinous) into a twist of greaseproof paper and take the whole concoction to work with them. The paper and its contents would be put into their enamelled tea cans (which were also, by coincidence, known as 'billy cans') and water, drawn from the locomotive's boiler added.
Like all right thinking people I have, since childhood, been an avid steam railway fan and I have always yearned to try this delicious-sounding manifestation of the tea drinking habit.