Wash 4-5 fresh limes under running water, then chop each lime into 8 pieces.

In a blender, add the chopped limes, 4 cups of cold water and 1 cup of sweetened condensed milk. Blend on high for 30-40 seconds until smooth.

Strain the blended mixture through a fine mesh strainer to remove pulp.

Fill tall glasses with ice and pour the strained limeade over, filling each glass about three-quarters full.

Garnish with a slice of lime or a sprig of mint and enjoy immediately.