Combine sugar and water in a small pan; simmerover medium heat, stirring, until sugar dissolves.Transfer syrup to a large bowl to cool completely.Advertisement
Puree cantaloupe in a food processor or blenderuntil smooth (you should end up with about 3 cups).Add puree and lemon juice to cooled syrup. Transfer toa 13-by-9-inch glass dish. Freeze, uncovered, rakingwith a fork every 30 minutes to keep it from becomingtoo solid, about 3 hours. Serve immediately.