200g/7oz Jerusalem artichoke, peeled and diced
200g/7oz butternut squash, peeled and diced
300驳/10陆辞锄 celeriac, grated
1 garlic clove, crushed
1 bulb black garlic
陆 tsp garlic powder
陆 bunch parsley, roughly chopped
200g/7oz parsnip, peeled and diced
550g/1lb 4oz potato
1 shallot, sliced
1 bunch tarragon, leaves picked
100驳/3陆辞锄 mashed potato
50驳/1戮辞锄 cornflour
2 tbsp olive oil
salt
8驳/录辞锄 salt
100驳/3陆辞锄 Coolea cheese, or any hard cheese, grated on a microplane
splash double cream
50驳/1戮辞锄 duck fat
1 medium free range egg, beaten
175ml/6fl oz Sauternes dessert wine