3 mountain cupcakes with frosting Recipes

lemon cake mix, lemon pudding mix, eggs, mountain dew soda, vegetable oil, sugar, salted butter (room temp ), mountain dew soda, lemon juice, lime juice, drops neon green food coloring

unsalted butter, at room temperature, brown sugar (about 1/2 cup), granulated cane sugar (about 1/2 cup), all-purpose flour (about 1 3/4 cups), chestnut flour (about 3/4 cup), baking soda, baking powder, salt, eggs, vanilla extract, caramel , recipe follows (about 1 cup), sour cream (about 1 1/4 cup), black sesame pastry cream , recipe follows, chestnut cream frosting , recipe follows, black and white sesame chopsticks , recipe follows, granulated cane sugar (about 1 cup), heavy cream, juice of 1 lemon , optional, whole milk, egg yolks, granulated cane sugar (about 1/4 cup), cornstarch , sifted (about 2 tbsp), pure vanilla extract, butter, at room temperature (about 2 tbsp), tahini (about 1/2 cup), black sesame powder, chestnut paste or chestnut cream, such as clement faugier (about 3/4 cup), unsweetened chestnut puree , such as clement faugier (about 3/4 cup), unsalted butter, softened, powdered sugar (about 1 cup), dark rum, vanilla extract, special equipment : a multi-opening or spaghetti-style piping tip, such as ateco 234, granulated cane sugar (about 2 oz), white vinegar, white sesame seeds, black sesame seeds, special equipment (optional): an unlined copper pot , a digital-alarming candy thermometer