Southeast Asia in general has an amazing variety of coffees and cool ways of brewing or enjoying the brew, one of the most unique I've encountered is Vietnamese egg coffee.
Vietnamese egg coffee at a night market in Sapa. No smiley-face, but still an 'A' for presentation. All part of the enjoyable process when enjoying unique local styles of coffee in Southeast Asia
It's a sort of whipped-up meringue-like recipe which involves condensed milk, a Southeast Asian coffee go-to, and, obviously, what kind of egg coffee doesn't have fresh egg?
The new consistency adds some depth to the coffee in giving it a bulkier or heavier feel. Like a thick latte, maybe? But the presence of a whipped egg foam adds a new flavour which sort of floats over the coffee as you consume it, not overwhelmingly sweet or homogeneous like a latte from your local Starbucks, maybe more a hint of eggnog or even Advocaat, if that's your thing.
Regardless how you feel about the aforementioned flavours, I'm not doing the drink any favours in my limited powers of description-by-text. You should definitely try it for yourself!