Pre bake your tart shell and set aside to cool. If you don’t have time to make one homemade there are many options in the refrigerator/freezer section of your grocery store. Trader Joes are my favorite when I am in the US. And when in London, Waitrose has a nice premade short crust.
Preheat oven to 160c/325f
8 oz 70% Chocolate- chopped
1 cup Heavy Cream
½ cup Half and Half
¼ cup Sugar
1 Egg Yolk
1 teaspoon Vanilla Bean Paste-vanilla extract is fine.
1 teaspoon black coffee –cold
pinch of Sea Salt
Place eggs, yolk, coffee,salt and vanilla in a bowl and stir together.
Heat cream, half and half, sugar until just boiling. Remove from heat and add Chocolate and whisk until smooth and incorporated.
Very slowly whisk hot chocolate mixture over eggs.
Strain chocolate mixture into your tart pan.
Bake for 20 minutes.