Slice the beetroot into cubes and mix the vinegar, water, sugar and salt in a jug. Stir thoroughly and then pour over the beetroot and leave in the fridge for 2 hours
Step 2
Thinly slice the onions and put on a medium high heat with the butter
Step 3
Stir continuously and once they begin to soften add the sugar and balsamic vinegar. Keep stirring until nicely caramelised.
Step 4
For the burger, season well and shape the mince into a patty. Leave in the fridge for an hour to set
Step 5
Cook the burger on a medium high heat until nicely seared on both sides. You can then finish in the oven at 180c for 6-8 minutes to finish cooking
Step 6
Then add butter to the same pan and once it melts add the flour. Stir well for a minute or two and then add the stock. Keep adding and stirring until you have a thick sauce. Then add the cream and Worstershire sauce, let it reduce until really thick
Step 7
For the mayo, combine the piccalilli, mayo and parsley in a bowl and stir well.
Step 8
For the crispy onions, throw in the seasoned flour and make sure they’re coated well. Heat some oil to 180c and fry until golden brown and crispy. Finely chop
Step 9
Toast your bun and for the additional toppings I added freshly diced onion, pickles, with ketchup and mayo. Build and enjoy