Wood-fired Mushroom & Truffle Sourdough Pizza

Sourdough starter (23%) (fortified wheat flour (wheat flour, calcium carbonate, iron, niacin, thiamin), water, wheat flour, wheat starch, malted wheat, sourdough culture (wheat)), wheat flour, chestnut mushroom (10%), mozzarella cheese (milk), fortified wheat flour (wheat flour, calcium carbonate, iron, niacin, thiamin), crème fraîche (milk), portobello mushrooms (6%), tomato purée, milk, mascarpone (milk), wheat semolina, whipping cream (milk), extra virgin olive oil, olive oil, salt, parsley, yeast, maize starch, garlic purée, carrot, truffle (0.2%), dextrose, black olive, flavouring, butter (milk), pectin, rapeseed oil, black pepper, chilli, malted wheat flour, concentrated lemon juice, thyme, white pepper.