Simple and comforting stew;
Meanwhile, slice/cube beef and sprinkle a generous amount of salt (about a teaspoon), massage it to coat. Add Beef cubes to the pot and brown each cube on all sides (after the oil is heated, turn the temperature to medium).
5 days in the fridge, reheat well and eat. Make sure it is in an AIRTIGHT container. You can add other veggies, such as peas, green beans, kale, *kimchi, etc.