1 large fresh red chilli, deseeded and finely chopped
4 courgettes, very finely sliced
1 garlic clove, finely chopped
3 garlic cloves, finely sliced
Β½ unwaxed lemon, zest and juice
Β½ lemon, juice only
1 tbsp finely chopped fresh marjoram or oregano
Β½ handful of mint, leaves picked and stalks reserved
2 tbsp finely chopped fresh flatleaf parsley
1 shallot, finely chopped
70ml/2Β½fl oz balsamic vinegar
salt and freshly ground black pepper
2 tsp fennel seeds, lightly crushed
50ml/2fl oz extra virgin olive oil
100ml/3Β½fl oz extra virgin olive oil, plus extra for cooking
50g/1ΒΎoz unsalted butter
800g/1lb 12oz beef bavette, cut into 4 steaks