Turmeric Roasted Sweet Potato and Macadamia Soup

INGREDIENTS

medium red onions, peeled and quartered

2 lb

orange sweet potatoes, peeled and cut into chunks (about 6 1/2 cups)

1 tbsp

extra-virgin olive oil

1/2 tsp

Kosher sea salt, plus more to taste

8 cups

vegetable broth

2 tsp

minced fresh ginger

1/2 tsp

ground turmeric

cayenne pepper, plus more to taste

1/4 cup

unsalted macadamias

Fresh lime wedges, to serve

2 tbsp

finely chopped fresh cilantro, to serve

(Optional) chopped macadamias, for garnish