Step 3: Cut lime in 4 pieces, throw 3 of them in the glass along with the spearmint leaves and the dark sugar. Pour just a bit of rum to get the juices going and help with crushing the ingredients.
Step 5: Fill 3/4 of the Glass with Strawberry Slushie. It is best if you make your own by taking some quality strawberry sorbet ice-cream and throw it the mixer with water and a bit of sprite.
Step 7: Fill up the rest of the glass with rum. Stir well and garnish with remaining lime piece.