3 handfuls of ice cubes (fill up to 0.75 litre line in blender)
180ml Tequila Blanco
180ml Cointreau
6 tsp fresh lime juice
1 mini watermelon, rind and seeds removed, cut into chunks (800g after cutting rind)
Lime wedges to garnish
Sea salt for rim of glass
Tabasco to garnish (optional)