Heat the heavy cream and milk in a saucepan over medium-low flame, until it simmers slightly around the edges.
Remove from the heat; add the chopped chocolate and stir until melted and smooth.
Add the sugar and salt and whisk until well incorporated.
Beat the eggs in a small bowl until blended and add them to the chocolate mixture, stir until completely blended.
Pour the filling into the cooled tart shell and bake at 325°F for 30-35 minutes until the filling is a bit puffy, outside 2-inches of filling is set and the surface is glossy.
Cool before cutting and store in the refrigerator.
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