200g/7oz chestnut mushrooms, thinly sliced
2 tbsp finely snipped fresh chives
2 garlic cloves, finely chopped
2 level tbsp roughly chopped gherkins
1 red pepper, seeds removed, roughly chopped
4 shallots, finely chopped
150g/5陆oz brown basmati rice
1 level tbsp wholegrain mustard
150ml/5fl oz beef stock
salt and freshly ground black pepper
1 tbsp light olive oil
1 tsp sweet smoked paprika
1 tbsp cider vinegar
100ml/3陆fl oz fat-free plain fromage frais
200g/7oz lean sirloin steak, visible fat removed, thinly sliced