Mushroom & Chard Stroganoff - Another Pantry

Ingredients

• 4 tbsp neutral oil (such as groundnut or sunflower)
• 750g mixed mushrooms (button, chestnut and portobello), whole, halved, quartered or sliced, depending on size
• 2 onions, finely sliced
• 5 garlic cloves, finely sliced
• 1 teaspoon paprika (preferably sweet)
• ¼ teaspoon cayenne or chilli powder
• 200ml white wine or cider
• 300g rainbow chard, leaves separated from stalks, stalks finely sliced, leaves roughly chopped
• 200ml stock
• 200ml crème fraîche
• 3 tablespoons lemon juice, or more to taste
• 15g parsley or chervil (or both), finely chopped
• sea salt flakes and black pepper
• boiled rice, to serve