Step 1

Mix cold water and sugar. Chill until ready to use.

Step 2

Wash limes thoroughly. Cut off ends and then cut each lime into eighths.

Step 3

Place half the limes and half the water/sugar mixture in a blender. Pulse 5x. Strain into pitcher with a fine mesh sieve. Dump pulp in trash. Repeat with other half of limes and water/sugar mixture.

Step 4

Add ice and condensed milk right before serving. Stir and enjoy.