1 garlic clove, smashed
1 garlic clove, chopped
1 lemon, juice only
1 lemon, zest and juice
15g/½oz fresh flatleaf parsley, chopped
1 banana shallot, peeled and diced
4 fresh thyme sprigs
salt and freshly ground black pepper
2 tbsp olive oil
2–4 tbsp olive oil
25–50ml/¾–2fl oz cider vinegar, to taste
200g/7oz wet walnuts, toasted and chopped
40g/1½oz unsalted butter
50²µ/1¾´Ç³ú Parmesan, grated
2 x 300g/10½oz halibut steaks on the bone