Everyone’s had some Advocaat at a party, this is the superlative egg-based Dutch liqueur. No, it’s not a very competitive category, but it counts for something. This is made with just four ingredients; egg yolk, brandy, sugar and vanilla. This can be used to make such classic cocktails as a Green Monster, a Fluffy Duck, a Broken Nose, and, of course, a Squashed Frog.