Chocolate Pot de Creme

Ingredients --  Ovo-Lacto Vegeterian
Keto version of a favorite French & English custard dessert, rich in fats and eggs, which traditionally doesn't have much sugar or sweetness. (2 traditional small servings)

Break the chocolate into pieces in a bowl.  In a separate bowl, whip 1 egg yolk until frosty.
In a thick-bottom saucepan, place the cream and sweetener along with a touch of Vanilla extract.  Bring it close to boiling, stirring occasionally to prevent scorching.  When it begins to boil, remove from the heat.
Add a few drops of the hot cream into the egg yolk bowl, and whisk.  This "tempers" the egg without cooking it. Do this 2-3 times. After the egg is tempered this way, pour in the rest of the hot cream and mix well.
Return the mix to the stove in the saucepan at the lowest possible heat until it thickens, stirring constantly. Once it becomes thick enough to coat the back of the spatula or spoon, remove from heat immediately.
Pour the hot mix over the chocolate pieces and let sit for a few minutes to melt. Then whisk the entire mixture until it has a glossy pudding consistency. Add a pinch of salt and if necessary, a touch more cream if it's too thick.
Divide into two ramekins or bowls.  Cover & let sit in the refrigerator for a couple of hours before serving.