Pari-Pari Shū (パリパリシュー, Cookie Shu)

Ingredients

Equipment Needed

• •Piping bag with round tip
• •Rolling pin
• •Parchment paper
• •Fine-mesh sieve
• •Wire cooling rack

Instructions

1. 1

   Make cookie dough

   Beat the softened butter and sugar until smooth, then mix in the cake flour and salt just until a soft dough forms. Roll it between two sheets of parchment to about 1/8 inch thick and chill until firm. Cold cookie dough cuts cleanly and sits on the choux instead of melting down the sides too soon.

2. 2

   Prepare custard

   Warm the milk until small bubbles gather at the edge. Whisk the yolks, sugar, and cornstarch until pale, then whisk in the hot milk slowly so the eggs don't curdle. Return everything to the pan and cook over medium heat, whisking, until thick and glossy. The starch must boil briefly to lose its raw taste and set the cream firmly enough for piping.

3. 3

   Finish cream

   Off the heat, whisk in the vanilla and butter, then press the custard through a sieve. Cover the surface directly with plastic wrap and chill until cold. Fold in the whipped heavy cream just before filling. The custard should be cool, smooth, and able to hold a soft peak, because a loose filling makes the shell soggy from the inside.

4. 4

   Cook choux base

   Heat the oven to 425°F. In a saucepan, bring the water, milk, butter, sugar, and salt to a full boil. Add the flour all at once and stir hard until the dough gathers into a ball. Keep cooking it over medium heat for about one minute, smearing and turning it against the pan, until a thin film forms on the bottom. This drying step matters: too much water left in the dough and the shells collapse before they can hold themselves.

5. 5

   Add the eggs

   Move the dough to a bowl and let it cool for three minutes, so the eggs don't scramble on contact. Beat in the eggs a little at a time. Stop when the dough is glossy and falls from the spoon in a thick ribbon that leaves a V shape. You may not need every drop of egg. The dough should be soft enough to pipe, not so loose that it spreads.

6. 6

   Pipe and cap

   Pipe ten mounds onto a parchment-lined baking sheet, leaving space between them. Cut chilled cookie rounds slightly larger than the mounds and lay one on each. The cap should rest lightly, not be pressed down. It will guide the rise and bake into the crisp top that makes the pastry pari-pari.

7. 7

   Bake the shells

   Bake at 425°F for 10 minutes, then reduce to 350°F and bake 20 to 25 minutes more, until deeply golden, dry, and firm. Do not open the oven early. The first heat sets the shell before the steam escapes, and the lower heat dries the inside so it stays hollow instead of sinking.

8. 8

   Cool completely

   Pierce the side or bottom of each shell with a skewer to let trapped moisture escape, then cool on a rack until completely cold. This is patience, not politeness. Pipe cream into a warm shell and you melt the filling; trap moisture inside and the crackle softens.

9. 9

   Fill and serve

   Transfer the chilled custard cream to a piping bag with a small round tip. Fill each shell through the bottom or a side seam until it feels pleasantly heavy, not bursting. Serve soon, while the cookie top is crisp and the cream is cool.

Chef Tips

• •Use fresh eggs and good milk. There is no strong flavor here to cover flat dairy, and the cream is where the whole pastry becomes tender.
• •If you don't have a piping bag, use a sturdy zip-top bag with a corner cut small. It works, but fill carefully. A proper pastry bag gives cleaner pressure and fewer broken shells.
• •Bake the shells darker than fear tells you. Pale choux looks gentle but tastes damp and collapses quickly. A proper shell is golden, dry, and light in the hand.
• •Fill close to serving. Japanese bakery shū is loved because the contrast is clear: crisp shell, cool cream. Time is the enemy of that contrast.

Advance Preparation

• •The cookie dough can be rolled and chilled one day ahead, or frozen for up to two weeks. Cut the rounds while the dough is firm.
• •The custard can be made one day ahead and kept refrigerated with plastic wrap pressed directly to the surface.
• •The choux shells are best baked the day they are served. If needed, bake them a few hours ahead and keep them uncovered at room temperature, then fill just before serving.

Frequently Asked Questions

Nutrition Information

1 serving (about 110g)