Caramelised Onion Bangers and Herby Buttermilk Mash Recipe - Great British Chefs

Ingredients

• 700g of Nanna Tate potatoes, peeled and diced into 1 inch chunks
• 150ml of buttermilk
• 150ml of crème fraîche
• 1 handful of chives, finely chopped
• 1 handful of fresh parsley, finely chopped
• salt and pepper, to taste
• 50g of chives
• 100ml of olive oil
• iced water, as needed
• 150g of salted butter
• 250g of panko breadcrumbs
• 6 Lincolnshire sausages
• 1 tbsp of vegetable oil
• 6 red onions, finely sliced
• 1 tbsp of brown sugar
• 1 tbsp of plain flour
• 75ml of red wine
• 200ml of beef stock, plus more if needed
• 2 sprigs of rosemary, needles finely chopped
• 50g of butter, diced
• freshly ground black pepper