Adapted from Cāļa virtuve
Serves 6 or freezes well in small portions
Dough - Method #1: Mound the flour on a clean, large surface (cutting board, table, counter, etc..) and sprinkle with a bit of salt. Form a well in the center and crack the egg into it. Using your (clean!) hands, mix together into a dough, adding water until it comes together. (You may not need all of the water, depending on the day.) Knead until smooth and elastic - about 5 - 7 minutes.
Dough - Method #2: In the bowl of a stand mixer fitted with a dough hook, combine flour, salt, egg and a bit of the water. Mix, adding water as required to produce a strong dough. Knead on medium-low speed until smooth and elastic - about 2 - 4 minutes. [This is my preferred method. I love my mixer!]
Let the dough rest for 30 minutes or so while you put together the filling.
Filling: Grate, grind or process the onion and garlic, then mix all ingredients together thoroughly.
Roll out the dough to about 1/8" thickness. Using a small biscuit/cookie cutter or a glass, cut out as many rounds as will fit. I use a 2 1/4" / 58 mm cutter myself.
Spoon a small amount of filling - my rounds take between a teaspoon and a teaspoon and a half - into the center, then stretch the dough over it (as necessary) to form a half moon shape. Crimp the edges shut, then bring the ends together and pinch - similar to a tortellini.
OR: Cut even smaller rounds out and place the filling in the center of half of them. Cover each round of filling with another dough round and crimp the edges down.
Freezing: If you're not planning to cook them all immediately, arrange the pelmeņi on a sheet pan and place flat in a freezer for several hours. Once they have frozen completely, seal in freezer-safe ziptop bags and freeze for up to 6 months.
Cooking and Serving: For a full meal, I figure about 150g to 200g of pelmeņi per person. There are several ways you can prepare these - these are two of my favorite.
Method #1: Cook the pelmeņi for 10 minutes in just enough boiling, salted water or chicken broth to allow them to float. During the last 5 minutes of cooking, add a bag of frozen veggie mix. Ladle pelmeņi, broth and veggies into bowls. Stir in a tablespoon of sour cream and a teaspoon or two of soy sauce (adjust to your taste).
Method #2: Using a deep fryer or in 1/2" of peanut oil in a wok or deep skillet, heat oil to about 350F. Drop in pelmeņi and fry until golden brown on all sides. Remove and drain, patting off any excess oil. Serve with plenty of sour cream. [Note: I take no responsibility for the sheer addictive delight of fried pelmeņi. Eat at your own risk!]