In a blender, combine 4 cups of cold filtered water with 2 whole limes cut into wedges and 1 cup of granulated sugar. Blend on high speed for about 30 seconds until smooth and frothy.

Place a fine mesh strainer over a large bowl and carefully pour the blended mixture through. Press down on the pulp to extract as much liquid as possible.

Clean the blender, then pour the strained mixture back in. Add 1 cup of sweetened condensed milk and blend on high for 15 to 20 seconds until smooth.

Fill tall glasses with ice cubes and pour the freshly blended Brazilian Lemonade over the ice.

Garnish each glass with a slice of fresh lime or a sprig of mint. Serve immediately and enjoy!