Bring the milk to the boil, then pour over the chopped chocolate. Allow to stand for 30 seconds. Whisk the mixture until smooth and all the chocolate has melted. Spread or pour over a baked cake.
It can work as a ganache drip around the edge of a cake. You can also make thinner ganache with a ratio of 1.5-to-1 cream to chocolate. This makes a rich, intense hot chocolate, a thin glaze ...
immediately pour over chocolate. Let sit, undisturbed, for 5 minutes. Add butter and mix with a heatproof rubber spatula until smooth and glossy. Scrape ganache into crust and smooth out any bubbles.