The Sweet Potato Soup | want to try | Umami

Ingredients

• 2 tbsp extra virgin olive oil
• 30g / 2 tbsp unsalted butter (- or more oil)
• 2 onions (, diced)
• 2 leeks (, white and pale green part only, quartered, cut into 1cm / 1/2" slices (Note 1)
• 2 garlic cloves (, chopped)
• 1 kg/ 2 lb sweet potato (, peeled, quartered lengthwise, cut into 2cm / 0.8" chunks)
• 1 tbsp cumin powder
• 1 ¼ litre / 1.25 quarts chicken or vegetable stock (, low sodium (Note 2)
• 1 ½ tsp cooking / kosher salt
• 1 tsp black pepper
• 1/3 cup cream (any type) or an extra knob of butter)
• Something to drizzle / dollop (- extra virgin olive oil, cream, yogurt, sour cream)
• Something crunchy - flatbread strips (pictured, Note 3), croutons, pistachios, pepitas, crispy fried shallots)