Cut 3 kg beef (preferably a piece for slow cooking) into large chunks to fit into your pot.

In a large pot, fill with enough water to cover the beef chunks.

Add the beef chunks to the pot.

Bring the pot to a boil.

Carefully remove the foam that rises to the top with a slotted spoon.

Peel 2 carrots, 2 celery sticks, and 1 onion.

Cut the carrots and celery into large pieces.

Halve the onion.

Once the foam has been removed, add the prepared vegetables to the pot.

Add salt and a handful of black peppercorns.

Lower the heat to a simmer.

Cook the beef, fully covered, for 4 hours, or until very tender.

Once done, the beef will be very tender.

You can serve it with some of the broth.

Alternatively, use the beef for further recipes like shredded beef or a stew.