Chard and New Potato Curry

Ingredients

• About 500g Swiss chard
• 2 tablespoons sunflower oil
• 1 onion, halved and finely sliced
• 3 garlic cloves, peeled
• 1 green chilli, deseeded and finely chopped
• 3cm piece of ginger, peeled and chopped
• 1 teaspoon garam masala
• ½ teaspoon mustard seeds
• ½ teaspoon ground cumin
• ¼ teaspoon ground turmeric
• 3 cardamom pods, bashed
• 350g new potatoes, quartered
• 250g plain (full-fat) yoghurt or vegan alternative
• 1½ tablespoons tomato purée
• A small bunch of coriander, roughly chopped
• A small handful of almonds, cashews or pistachios, toasted and chopped
• Sea salt
• freshly ground black pepper