The Samovar
(A little bit of colour for your Russian characters)
Where you get Russians you'll get tea.
Russian troops are notorious tea-drinkers and drink their tea usually without milk and often sweetened and this is usually served in a metal-based glass. Within Russia, tea preparation differs, but usually includes lemon, and sugar or jam. They first brew a concentrated brew up and then mix it to taste with plain boiled water.
The preferred method of making tea is in a samovar, a metal boiling vessel consisting of an urn with a vertical metal tube inside filled with solid fuel. The Russian jackboot, the sapog, can be used as a bellows to get the fuel hot. No, I have no idea how you'd do that.
