Pureed half a cantaloupe in the blender and strained it for the juice. I didn't need very much sugar at all because the cantaloupe was so ripe, so rather than muddle limes, I just squeezed them into a glass. I then added 2oz of cachaça, some ice and topped it off with the fresh squeezed cantaloupe juice. Stirred that baby and it was ready.
Actually, it needed some more cachaça to cut the sweetness but that's just me.