So I'm sure if I used the right search terms I would find something remarkably similar to this already on here (hell I did something similar last year, but this one is a bit more on point), but it's what I came up with. It's a pretty typical sour, with the two main departures being the use of Apple Cider Vinegar to replace PART of the lemon and the use of honey (I find that honey added straight when one has the energy for a very vigorous dry shake seems to enhance the texture) It was delicious. I've also discovers that I'm the kind of person who likes his eggwhite enhanced sours on the rocks . . . Who knew?
2oz Laird's Old Apple Brandy
1/3oz Apple Cider Vinegar
2/3oz lemon juice
6ish drops Bittermens' Tiki Bitters
One egg white
Angostura bitters (to garnish)
Tbsp Apple butter (optional)
Add brandy, lemon, egg white, vinegar and honey to shaker. Vigorously dry shake. Add ice, tiki bitters and apple butter. Shake again. Strain into ice filled rocks glass or chilled coupe as you prefer. Dash angobitters over spoon to garnish.