How to make it
5 steps. Take it one step at a time.
Wash the limes thoroughly
Wash the limes thoroughly. Cut off the ends, quarter them, and remove the white central pith/core from each piece to prevent bitterness.
Place the quartered limes and cold water
Place the quartered limes and cold water in a blender. Pulse only 3 to 5 times for about 1 second each. Do not over-blend, or the lime skin will make the juice very bitter.
Strain the lime mixture through a fine-mesh sieve
Strain the lime mixture through a fine-mesh sieve into a pitcher or back into the cleaned blender jar. Discard the remaining solids.
Add the sweetened condensed milk, sugar, and ice
Add the sweetened condensed milk, sugar (if using), and ice to the strained lime juice. Blend again until smooth and frothy.
Pour into glasses
Pour into glasses and serve immediately. Garnish with a lime slice if desired.
A little kitchen wisdom
Removing the white pith from the center of the limes is crucial to prevent bitterness. Always serve immediately as the lime zest can make the drink bitter if it sits too long.
