2 3/4 cups (660 ml) whole milk (full fat)
1 cup (210 grams) firmly packed dark brown sugar
1/4 cup (30 grams) cornstarch (corn flour)
1/2 teaspoon salt (preferably kosher)
2 large egg yolks (34 grams)
1 large egg
1 1/2 teaspoons pure vanilla extract
3 tablespoons (42 grams) butter, cut into small pieces
Garnish: Lightly sweetened whipped cream