A true classic, this one's a winner.
2 oz Spirit Works Sloe Gin
3/4 oz Lemon Juice
1/2 oz Simple Syrup
1 Egg White
4 oz Cold Seltzer Water
Combine all ingredients except seltzer in a cocktail shaker. Shake without ice for 15 seconds, then add ice and shake for 15 more seconds. Fine strain into a collins glass and top with seltzer.
Garnish with a sprig of mint.