Steak tartare with shoestring fries, kidney and cavolo nero

By Matt Tebbutt From Saturday Kitchen Ingredients For the steak tartare 200g/7oz beef rump, sirloin or fillet 20g/¾oz tomato ketchup 1 tbsp snipped fresh chives good splash Worcestershire sauce 1 tsp Dijon mustard good few drops Tabasco 1 tbsp baby capers …