Gamja Jorim (Braised Potatoes)

Soaking the cut potatoes before cooking removes surface starch that would otherwise cloud the sauce and cause the potatoes to stick together in the pot. It's a small step, but it's part of what keeps the finished dish looking clean and glossy rather than starchy and dull.

The covered-then-uncovered simmer follows the same logic as most Korean braises: the covered stage cooks the potatoes through gently without the sauce reducing too fast, and the uncovered stage afterward is what actually thickens the sauce into a glaze that clings to the potatoes instead of pooling thin around them.

Gamja jorim is one of the most common everyday banchan in Korean households specifically because it holds up well over several days in the fridge, unlike more delicate vegetable side dishes — a practical, keeps-well dish more than a special-occasion one.

Troubleshooting

Potatoes falling apart? They were probably simmered too long, or the pieces were cut too small — larger cubes and a closer eye on timing help them hold their shape.

Sauce thin instead of glossy? Give it more time uncovered at the end — that's the step that actually thickens it, not more sugar or corn syrup.

Potatoes tough in the center? They needed more time in the covered simmer stage before moving to the uncovered reduction.