Combine 1/2
cup light cream with 1/4 cup milk and cook over medium heat
until bubbles form around edge of pan.
Immediately add
the 1/4 cup of sugar and the pinch of salt stirring until
dissolved.
Remove from heat.
In a small bowl
combine 1/4 cup milk with the cornstarch and whisk to remove
lumps.
Whisk in the 2 eggs.
Add the hot cream mixture in a thin stream whisking
constantly.
Add mixture to
saucepan.
Bring to a boil,
cook over low heat, stirring constantly until custard
thickens ( about 3-4 minutes).
Remove from heat and stir in the 1/2 tsp of vanilla extract.
Allow custard mixture to cool at room temperature.
For Chocolate frosting:
In a
heavy saucepan over low heat, stir the chocolate pieces and
2 tablespoons butter until completely melted.
Remove from
heat and stirring constantly add the 1/4 light cream in a
thin steady stream.
When mixture is smooth, stir in the confectioners sugar
and beat vigorously.
Stir in the 1/2 tsp. vanilla
extract.
Assemble cake:
Spread the cooled filling over 1 of the cakes and
place the second cake on top.
Pour the chocolate frosting
evenly over the top allowing it to spill down the sides.