For making the DDL, remove the label of the condensed milk can.

Keep it inside a good pressure cooker and fill water upto 3 inches over the can. The can should literally be sunk in the water.

Close the lid of the cooker without the weight. Keep it on medium-high flame.

Once you see vapor coming from the valve, put in the weight and wait for it to whistle. Allow 3 whistles on high and then keep on low flame. Keep the cooker on for 30 minutes for a gooey DDL and for a thicker DDL, upto 60 minutes.

Switch off and allow it to cool completely - not only the pressure is gone, but the cooker has to come to room temperature.

Open the lid of the cooker, pull out the can and leave it on the kitchen top till it is totally cool to use.

Use as required and store the remaining in a clean glass jar in the refrigerator. It normally won't last for too long!

To make the coffee, whisk in the ingredients and allow to heat. The DDL will melt and mix in with the heat.

As soon as it comes to boil, switch off and pour back and forth into your cup around three times.

Serve immediately!