Ox burger

• 500g minced beef
• 1 onion
  finely diced
• 1 tbsp capers
  rinsed and roughly chopped
• finely chopped to make 1 tbsp gherkins
• 1 egg
• 3 tbsp breadcrumbs
• y small bunch flat-leaf parsley
  leaves chopped
• 1 tsp Dijon mustard
• 1 tsp Worcestershire sauce

tomato sauce

• 2 × 400g tins plum tomatoes
• 2 shallots
  finely diced
• 2 cloves garlic
  crushed
• 1 tbsp leaves fresh thyme
• 2 tsp vegetable oil