Ice Cream Sundae Cake

unsalted butter

sugar (1 1/2 cups)

unsweetened cocoa powder (1 cup)

eggs (cold)

vanilla extract

salt

all-purpose flour (1/2 cup)

heavy cream (2 cups)

milk (1 cup)

granulated sugar (1 cup)

salt

egg yolks

vanilla paste (or 1 tbsp vanilla extract)

maraschino cherries (1/3 cup, patted dry)

large waffle cones (coarsely chopped)

peanuts (1/2 cup, coarsely chopped)

Miniature ice cream cones

buttercream (homemade or store-bought)

Assorted food coloring

heavy cream (2 1/2 cups)

powdered sugar (1/2 cup)

Sprinkles