Add 1 kg of stewing beef, cubed.
Season with salt and pepper.
Sprinkle 1 tablespoon of all-purpose flour and mix thoroughly.
Add 1 tablespoon of Worcestershire sauce, 80 g of tomato sauce, and 300 ml of boiling water.
Mix the ingredients well. No need to brown or sear the beef; just combine everything.
Secure the Instant Pot lid and set it to "Pressure Cook" mode for 25 minutes.