Put 177ml (¾ cup) of the heavy whipping cream in a saucepan and bring to a low simmer.
Meanwhile, in another bowl, whisk the egg yolks and granulated sugar (or coconut cream for vegan) together until combined.
When the milk has simmered, stream into the whisked egg mixture while whisking continuously.
Pour the combined eggs and milk back into the saucepan and cook over low heat, whisking continuously, until thick enough to coat the back of a spoon about 180-183°F. Check by coating the back of a spoon, and running a finger through the mixture. The texture should be thick enough that the mixture coats the back of a spoon and holds its structure when you swipe your fingertip across it.
Remove the pan from the heat, and let it cool slightly until comfortable to touch. Pour into a bowl filled with the chopped chocolate. Mix with a spatula until smooth
Whisk the remaining 59ml (¼ cup) of heavy cream to stiff peaks, then carefully fold into the chocolate mixture.
Pour the chocolate into clean glass containers, cover and chill in the fridge for 30 minutes or more to set.
Notes
SUBSTITUTIONS/NOTES
For a vegan version: sub the 2 egg yolks for 1/4 cup of coconut cream.