2 garlic cloves, finely diced
500g/1lb 2oz leeks, washed, trimmed and sliced
1 potato, peeled and cut into 1cm/½in cubes
1 shallot, finely diced
3 fresh thyme sprigs, leaves only
sea salt and freshly ground black pepper
1 tbsp rapeseed oil
125²µ/4½´Ç³ú butter
250ml/9fl oz double cream
50²µ/1¾´Ç³ú ²µ°ù³Ü²âè°ù±ð, finely grated
4 x 250g/9oz good-quality rump steaks
3 brioche slices, cut into 1cm/½in cubes
100ml/3½fl oz white wine