Have you heard of fat washing cocktails?
It's not really washing, at all, but rather a way of infusing the flavor of fats into cocktails.
The method is this... Fragrant fats such as butter, oils or even bacon are melted and then added to a liquor. The liquor and fat sit together and it's frozen (or chilled) and the fat is skimmed off. Traces of the fat and the flavors from those fats are left behind.
I think so, but it's also a bit interesting.
Think about the possibilities - nut, olive or seed oils can be infused to make cocktails a bit more subtly flavored. Buttered Rum takes on a whole new meaning. It might be a different way to make Sangria or mulled wine!