Sweet Potato Dal with Lime (Healthy Lentil Curry) - The Pesky Vegan

Ingredients

• 1 tablespoon coconut oil ((or other cooking oil))
• 2 medium onions, finely chopped
• ½ teaspoon salt ((plus more to taste))
• 2 large sweet potatoes, peeled and chopped into 1-inch cubes ((1.5 lbs / 700 g))
• 6 cloves garlic, finely chopped
• Approx. 2 inch piece of ginger, finely chopped
• 2-3 rocket chillies, thinly sliced ((more or less depending on how you like your heat))
• 6 cardamom pods
• 2 teaspoons ground cumin
• 1 teaspoon ground turmeric
• 1 teaspoon ground fenugreek
• 1 teaspoon ground coriander
• 2 bay leaves
• 1½ cups (300 g) dried red split lentils
• 4-5 cups (1-1.2 litres) water or vegan stock ((plus more if needed))
• 1x 14 oz (400 g) tin tomatoes
• 1x 7 oz (200 ml) tin coconut milk ((or half of a standard tin))
• 1 lime, zest and juice
• 1 teaspoon garam masala
• Small handful fresh coriander