Chunky Vegan Leek and Potato Soup (Without Cream) - The Pesky Vegan

Ingredients

• 1 tablespoon olive oil
• 2 tablespoons (30 g) plant-based butter
• 3 medium leeks, washed, trimmed, cut lengthways, and sliced ((approx. 1 lb / 500 g))
• 3 large cloves garlic, finely chopped
• 4 medium potatoes, peeled and chopped into 1 cm cubes ((approx. 1 lb / 500 g))
• 4-5 cups (1-1.2 litres) vegan stock
• 3 bay leaves
• 1 teaspoon wholegrain mustard ((optional))
• 2 tablespoons nutritional yeast ((optional))
• ¾ cup (180 ml) unsweetened plant-based milk
• Salt and pepper to taste
• Chopped fresh parsley or chives, to serve