Russian Pelmeni

1 . Stage

Make dough: Combine egg, oil, and salt in a liquid measuring cup; add enough warm water to fill to 1 cup. Pour into a large bowl and knead in 3 cups flour until smooth and elastic. Cover with a dish towel and let dough rest for 30 minutes.

2 . Stage

Meanwhile, make filling: Combine ground beef, onion, water, salt, and pepper in a medium bowl; mix thoroughly by hand or using a fork. Set aside.

3 . Stage

Dust a baking sheet lightly with 1 tablespoon flour; set aside.

4 . Stage

Roll out a portion of dough very thinly on a lightly floured surface; keep remaining dough covered with a dish towel to avoid drying out. Cut out 2 1/2-inch rounds with a cookie cutter. Place about 1 teaspoon filling on one side of each dough circle. Fold dough over and seal the edges using your fingers, forming a crescent. Join the ends and pinch them together. Place on the prepared baking sheet. Repeat with remaining dough and filling. Freeze pelmeni for 30 minutes to prevent them from sticking together.

5 . Stage

Bring a large pot of lightly salted water to a simmer. Working in batches, cook frozen pelmeni in simmering water until meat is cooked through and pelmeni float to the top, about 5 minutes. Continue cooking for 5 more minutes. Transfer to serving plates using a slotted spoon.