200g/7oz Jerusalem artichoke, peeled and diced
200g/7oz butternut squash, peeled and diced
300²µ/10½´Ç³ú celeriac, grated
1 garlic clove, crushed
1 bulb black garlic
½ tsp garlic powder
½ bunch parsley, roughly chopped
200g/7oz parsnip, peeled and diced
550g/1lb 4oz potato
1 shallot, sliced
1 bunch tarragon, leaves picked
100²µ/3½´Ç³ú mashed potato
50²µ/1¾´Ç³ú cornflour
2 tbsp olive oil
salt
8²µ/¼´Ç³ú salt
100²µ/3½´Ç³ú Coolea cheese, or any hard cheese, grated on a microplane
splash double cream
50²µ/1¾´Ç³ú duck fat
1 medium free range egg, beaten
175ml/6fl oz Sauternes dessert wine