Potato röstis with sauerkraut, fried onions and Barbers 1833 cheddar b – Barber's

Ingredients

• 150g of grated Barbers cheddar cheese
• 2 potatoes peeled (about 400g/14oz) – choose a white, floury variety, such as Wilja, King Edward or Maris Piper
• 150g of good quality sauerkraut
• 1 onion finely sliced
• 1 Tbls of finely chopped chives
• 3 Tbls of olive oil
• 1 Knob of butter
• 1 x egg
• Salt and Pepper