Ingredients

Steps

• Cut the potatoes into even small cubes and place in a pan of cold salted water.
• Bring to the boil and cook until the cubes are very tender.
• Drain the water and return the potatoes to the pan.
• Add 50g butter and 100ml milk to the pan.
• Mash the potatoes thoroughly using a potato masher.
• Season with salt and pepper and stir in the mustard.
• Serve the mash while it is hot.