Place chocolate in a 2-quart casserole.
Microwave at MEDIUM 3 to 4 minutes.
Stir in sugar to make a paste.
Add water, molasses, milk, and salt.
Stir to blend well.
Microwave at HIGH 6 to 7 minutes or until bubbly hot, but not boiling.
Stir well at 2 minutes intervals.
Pour into mugs and serve hot