Squeeze lemons, reserving rinds. Measure 11/2 cups juice into large freezer-proof jar. Add bourbon, water and sugar and stir until sugar dissolves. Add lemon rinds. cover and let stand at room temperature 24 hours.
2
Squeeze rinds into bourbon mixture, then discard rinds. Strain bourbon mixture and return to jar. Cover jar and freeze for 24 hours.
3
Scoop slush into glasses. Garnish with mint and serve immediately.
Cook's Notes
Advance Prep
Start the recipe 2 days before you plan to serve it.