This video shows the recipe for a delicious sweet potato pie, made with fluffy sweet potatoes wrapped in pie crust. Peel the sweet potatoes, slice them into rounds, soak them in water to remove bitterness, and boil them until soft. Mash the boiled sweet potatoes with a fork and strain them through a sieve to make a smooth paste. Mix the smooth sweet potatoes with room temperature butter, granulated sugar, egg yolk, and heavy cream to make the sweet potato filling. Divide the frozen pie crust into four equal parts, place the filling on each, and fold them up, sealing the edges with a fork. Brush with egg wash, sprinkle with black sesame seeds, and bake in a 200°C oven for 15 minutes to complete a crispy and fragrant sweet potato pie. It tastes even better when brushed with syrup while still hot.