Potato Gravy with Meat in a Jug

Ingredients

 * 1.5 l water
 * 500 g beef (with a bone)
 * 2-3 potatoes
 * 1 onion
 * 40 g vegetable oil or butter
 * pepper
 * salt

Directions

 * 1) Prepare the bone stock, pour it in a jug or a cast-iron pot and keep it in oven for 20 to 30 minutes. Dice the peeled potatoes, slice the onion in half rings, brown and transfer to the jug with meat. Add some pepper and cook in oven until done