Nana's Famous Black Bottom Chocolate Pie

For the holidays, my mom makes this INSANE chocolate pie that is a holiday must have for my kids. They usually asking about it in October. "Mom, are we going to have Nana's chocolate pie for Thanksgiving?"
I don't have a picture right now......stayed tuned.

Black-bottom Chocolate Pie

Filling

2/3 cup sugar

1/4 cup cornstarch

2 tablespoons unsweetened cocoa powder

Pinch of salt

6 large egg yolks

2 cups low-fat (1%) milk

1/2 cup chilled whipping cream

6 ounces bittersweet (not unsweetened) or semisweet chocolate, chopped

1 tablespoon dark rum

1 teaspoon vanilla extract

Chocolate Crumb Crust - or purchase a pre-made chocolate cookie crumb crust at supermarket

Preparation

For Filling:
Whisk first 4 ingredients in heavy medium saucepan to blend. Whisk in egg yolks to form thick paste. Gradually whisk in milk, then cream. Whisk over medium-high heat until mixture thickens and boils 1 minute. Remove from heat. Add chocolate and whisk until smooth. Whisk in rum and vanilla. Cool 5 minutes, whisking occasionally. Transfer filling to frozen crust. Chill until cold, at least 2 hours and up to 1 day.

For Topping:
Beat first 3 ingredients in large bowl until firm peaks form. Spoon whipped cream into pastry bag fitted with large star tip. Pipe rosettes around edge of pie. Garnish with chocolate curls. (Can be made 4 hours ahead; chill.)

I use a premade chocolate crust in a tin pie plate.