Into a pan, add sugar and water till sugar covered with it. Simmer until sugar melts. Turn off heat and add cocoa powder (keep 1 tbsp for later use) and mix well.

It will be nice thick and smooth. Add half of milk and mix well.

Now, mix milk powder and remaining cocoa powder and add some (2tbsp) milk to make paste. Then turn on heat, add paste into milk and bring it to simmer.

Turn off heat and pour into mug, cup or serving glasses, feel more then 1/2 cup. And add hot milk, and mix well. Serve hot.

NOTE - Here you can change the measurements of sugar. 1- For dark hot chocolate use 3tbsp sugar. 2 - For sweet hot chocolate use one more tbsp sugar. And 3- For mild hot chocolate use 3tbsp cocoa powder with 2,1/2tbsp milk powder and add water double then require.