South Side

5 Mint leaves
2 oz. Beefeater
3/4 oz. Lime juice
1/2 oz. Cane sugar syrup
1 dash Angostura bitters
1 Mint leaf



Prep garnish - 1 mint leaf.  Muddle the other 5 mint leaves in the shaker.  Add all the remaining ingredients and shake with ice, then strain into a coupe.  Garnish with the mint leaf.
    

Another pretty solid Classic that I'd never heard of.  I'm a fan of mint so this was enjoyable.