Step 1

Bring the milk and sugar to a light simmer over medium heat, stirring frequently. Once it begins to simmer turn heat to the lowest setting allow to cook until liquid is reduced by half. Stir every 10 to 15 minutes to make sure it is not sticking to the bottom of the pan. This can take anywhere from 2 to 2-1/2 hours.

Step 2

Remove from heat and add butter, allow it to melt then stir. Let the milk cool then place it in an airtight container and store it in the fridge.

Step 3

Bring the evaporated milk and sugar to a simmer on the stovetop. Stir until sugar is dissolved. Remove from heat and add butter. Stir until melted.  Let the milk cool then place it in an airtight container and then store it in the fridge.