During the Victorian era, moustaches were an element of genteel, masculine culture. They sat prominently on the upper lip and had authoritative associations. Great care went into their presentation - males would curl, oil, wax and dye their moustaches to ensure they were best kept, without a hair out of place.
However, there was a trap for moustachioed males and this was the afternoon cuppa - something no Englishman could avoid. When drinking a hot beverage, one's moustache would inevitably get wet and the wax or dye would melt into the tea or coffee, not only tainting the taste but causing the moustache to droop - the embarrassment!
There was a design solution to this everyday dilemma and the English potter Harvey Adams is widely attributed as the inventor. He designed the moustache cup in the 1860s, and the demand was immediate. Obviously, this everyday experience had been causing much bother.
The moustache cup is a teacup with a concealed ledge on the inner side. It sits horizontally and has an ovoid opening at the lip of the cup. The ledge guards the moustache, and the small opening allows the user to enjoy their beverage without the risk of dishevelment. The design was quickly embraced in Britain and Europe and later in the US.