Crush cardamom with the back of a knife. Transfer all seeds and pod to a saucepan and add milk.

Cook on medium heat for 10 minutes. Watch heat and if the milk is boiling too hard, lower heat as you don't want the milk to scorch.

While the milk is simmering, melt the chocolate. Using the double boiler method, melt the chocolate and the butter until completely melted and smooth.

Add melted chocolate, vanilla and sugar. Stir to combine and simmer 1 more minute.

Strain to remove the cardamom pieces and serve immediately.