MMMM! One of my favorite summer-time drinks. I found a recipe for Brazilian Lemonade last year. It called for using whole limes that you processed in a blender. I found the drink to be a bit to bitter for my liking so I altered it to this...
Juice of 2 lemons and 5 limes
1/4-1/2 cup of sweetened condensed milk
1 cup sugar
6-8 cups water
Combine all ingredients and serve over ice.