Spicy veg and preserved lemon quinoa - le petit oeuf

Ingredients

• 300g celeriac
• 375g sweet potato
• 375g carrots
• 1.5 teaspoons ground coriander
• 0.5 teaspoons ground cinnamon
• 2 tablespoons olive oil
• 120g tricolore quinoa
• 2 cardamon pods
• 50g preserved lemon
• 160g thick/greek yoghurt
• 1 garlic clove
• 1.5 teaspoons dark mustard seeds
• 0.25 teaspoon dried chilli flakes
• 0.5 teaspoon ground cumin
• 1 tablespoon lemon juice
• 8g finely chopped parsley leaves