Easy Vegan Scotch Broth (Scottish Barley Soup)

Ingredients

• 1 tablespoon olive oil
• 1 onion, roughly chopped
• 2 carrots, scrubbed and diced
• 1 leek, washed, trimmed, cut lengthways, and sliced
• 1 small swede, peeled and diced
• 1 1/2-2 litres vegan stock
• 2 tablespoons soy sauce or tamari
• 2 teaspoons dried sage
• 2 bay leaves
• 100 g pearl barley, rinsed
• 50 g dried red split lentils, rinsed
• 100 g sliced kale or cabbage
• Salt
• pepper