2 large leeks, trimmed and sliced
salt and freshly ground pepper
350g/12oz potatoes, such as Maris Piper, scrubbed and very finely sliced
1 heaped tsp Dijon mustard
¼ tsp smoked paprika, sweet or hot, plus a little extra for sprinkling
1 tsp soy sauce
50²µ/1¾´Ç³ú butter
50²µ/1¾´Ç³ú cheddar, grated
300ml/10fl oz double cream
500g/1lb 2oz boneless, skinless chicken thighs, cut in 4cm/1½in cubes
150ml/¼ pint cider