Prepare the limes

• Cut the limes into quarters.

Blend the limes with water

• Add the limes to a blender and cover with the water.
• Blend briefly, without over-blending, to avoid bitterness.

Strain the lime water

• Strain the blended lime water through a sieve into a bowl or jug, discarding the solids.

Blend with condensed milk and ice

• Pour the lime water back into the blender.
• Add the sweetened condensed milk and lots of ice.
• Blend again until smooth and frothy.

Serve

• Serve immediately over ice.