Sausages with Mustard Mash and Red Wine & Onion Gravy - Ainsley Harriott

Ingredients

• 450g good quality pork or veggie sausages
• a little oil for cooking
• For the Gravy
• 40g butter
• 450g red onions, halved and thinly sliced
• ½ tsp soft brown sugar
• 300ml full-bodied red wine
• 1 tbsp flour
• 600ml beef stock or veggie stock
• 1 tsp fresh rosemary leaves
• salt & white pepper
• For the Mustard Mash
• 900g floury potatoes (such as Maris Piper), peeled and cut into chunks
• 40g butter, melted
• 1-2 tsp grain or English mustard
• splash of milk
• 1 tbsp chopped fresh leaf parsley