1 1/2 oz Mezcal
3/4oz Lime Juice
1/2 oz Grapefruit Juice
1/2 oz HipStirs Blackberry Mint Syrup
Combine all ingredients in tin, add a small amount of crushed ice, shake until the crushed ice is wholly absorbed into a cocktail, pour into a rocks glass, add crushed ice, and garnish with a salted grapefruit slice.
Tools Used: Shaker Tins, Jigger/Measuring Device, Rocks Glass, Crushed Ice, Fresh Blackberry