Add about 2 - 3 cm of water to a pot. Place a steamer in the pot to make a steam pot. Cover with a lid, turn on the heat, and steam the sweet potato.
It's better to cut the sweet potatoes if they are big as it takes time to steam.
Steam for about 15 minutes at medium heat. If a chopstick goes through easily, it's done. The soft and flaky sweet potatoes are finished. I used half the amount of sweet potatoes as shown in the photo this time.
Peel the skin and put into a bowl. Mash with a masher.
Mash until there are no lumps. You can leave some if you want.
Add all ○ ingredients. Mix similarly to kneading. The puree filling is finished. ※ If you add more milk, then it becomes like a western paste, less milk turns it into a flaky Japanese-style paste.
Line room temperature puff pastry on a baking pan lined with parchment paper. Pierce with a fork.
Spread sweet potato paste, leaving some space on each side. Sprinkle cinnamon powder if you want. Preheat the oven.
Cut straight lines on the remaining puff pastry and cover the pies from Step 8. Secure the edges with the back of a fork.
Mix ◎ to make an egg yolk glaze. Brush on the pies from Step 9.
Bake for about 15 minutes in a 170°C to 180℃ oven. When browned, it's done.
Remove from the baking pan, together with the parchment paper, while it's hot, and let it cool.
The inside looks like this. Even though they taste good cooled, you should try the fresh-baked hot, crispy pie.
You can make a kabocha version the same way. Here is the process to make kabocha filling.
[Ingredients] Kabocha: 1/3-1/2; Sugar: 2-3 tablespoons; Honey: 2 tablespoons; Heavy Cream (or milk): 1; tablespoon; cinnamon powder: a small amount.
Steam the kabocha the same way as the sweet potato.
Steam well until a chopstick can pierce through easily. Peel the skin. You can peel before steaming, but it's easier to take it off with chopsticks after steaming.
Mash with a masher. Add the rest of the ingredients and mix.
Mix similar to kneading. When it's smooth, it's finished. Make the pies following the same process from Step 7.
Here is a sister recipe, "Sweet and Sour Apple Pie" Recipe ID: 1313093.
Here is a sister recipe, "Adzuki Bean and Peach Pie" Recipe ID: 2031907.
Story Behind this Recipe
I got a huge sweet potato, but could not eat it all, so I decided to make a pie.
Don't boil the sweet potatoes as they will be watery. Adding a little bit of water and steaming makes them fluffy. This is an easy version with no straining necessary. Adjust the amount of milk or honey to your taste. If you prefer a fluffy texture, then add more sweet potato.