Varenyky z Kartopleyu (вареники з картоплею, potato dumplings)

The first thing you notice is not the potato. It is the onion: sharp at the knife, loud in the pan, then suddenly sweet and golden, the moment the kitchen stops smelling raw and starts smelling like supper. That fried onion fat is the whole argument for potato varenyky. Without it, you've wrapped mash in dough; with it, you have a bowl people reach into before they sit down.

The mash wants a knob of fat and a fistful of fried onion, nothing fancier. Stir the onion and its oil through while the potatoes are still hot, because hot potato drinks flavor; cold potato wears it on the outside and tastes flat. Let the filling cool until it holds itself. Wet filling bursts dumplings. Dry filling behaves.

I fold mine in triangles because grandmother Vira put one piece of dough in my hand in 1997 and decided that was enough training. My hands remember. Cut squares, fold corner to corner, press out the air, and don't fuss if every edge looks different; half the beauty of a family bowl is that you can see who made which one. Serve them slicked with more onions, dill, a cold spoon of smetana if you like, enough for eight guests or one hungry Ukrainian.