Instructions

remove the label

1. Remove label from can of condensed milk.
2. Pierce two holes (on opposite sides of the can) with a can opener.   Since the can may bulge, this step prevents the can from exploding.
3. Place the can in a small pot and fill it with enough water to reach about 1 inch below the top of the can.   You will need to keep adding water during the cooking process to make sure the water does not go below this level as it evaporates.  Don’t let the water come higher than about half and inch from the top of the can to avoid water from getting onto the top of the can and into the holes you pierced.
   

   pierce two holes - IMPORTANT

4. Heat pot on medium high heat.  Once water begins to simmer, lower heat to keep water at a simmer.   At this point, some of the milk may begin to escape from the holes.  If this happens, scoop off with a spoon while to trying to avoid spilling any into the water.
5. Wait.  The longer the cooking time, the darker the caramel colour — about 3 hours gives soft Dulce de luche, and 4 hours gives firm Dulce de luche.
6. Carefully remove can and cool.
7. Open can entirely, and transfer contents into a bowl.   The top will be fluid, while the bottom will be more viscous and chunky.   When everything is in the bowl, whisk together to make mixture homogeneous.