Step 1

Heat the water and sugar until dissolved in a medium-sized pot. Remove from heat, add walnuts and blend in a blender until the consistency is smooth.

Step 2

Cook again over a double boiler for 1 hour. Let cool, strain with a sieve, and then pass through cheesecloth to remove smaller particulates from the liquid.

Step 3

Store in an airtight container in the refrigerator.