There are many things you can drink from a glass like this; I had some amazing salmiakkivodka for a while which went delightfully in my similar glasses.

I never get a round tuit but they're also a good size for dainty servings of a rich chocolate mousse. Obviously being dainty servings you need twice as many glasses as guests because some people want second helpings, but still, it's an elegant way of doing it.