Whole Stuffed Celeriac

Name: Whole Stuffed Celeriac
Ingredients: 20 g dried wild mushrooms; 1 large celeriac, about 1kg, or 2 smaller; 2 tbsp. olive oil; 1 echalion shallots, finely sliced; 2 garlic cloves, crushed; 100 g chestnut mushrooms, finely sliced; 150 mL vegan white wine; 2 tarragon stalks, leaves picked and roughly chopped; 250 mL dairy-free cream alternative, we used Oatly; 100 g baby spinach; 1 tbsp. truffle oil (optional); 25 g cooked chestnuts, roughly chopped; 15 g pine nuts, toasted and roughly chopped; 250 g pouch cooked mixed grains, we used Merchant Gourmet,; 25 -40g pomegranate seeds