First, make the Black Lava Salt Mix: Mix the Hawaiian black lava salt and the sugar, and pour on a saucer or small plate.
Wet half the rim of a tiki or hurricane glass with lime wedge and dip into Black Lava Salt mixture.
Pour grenadine directly into the bottom of the glass.
Combine mezcal, lime and pineapple juices, cream of coconut, and ginger syrup into a tin shaker. Add ice, shake vigorously, and strain into glass.
Add pebble or crushed ice, making sure to fill to the top, creating a dome-like shape. Garnish with citrus wheel.