Heat the grapeseed oil in a large soup pot or Creuset over medium-high heat. Add the leeks, lower the heat to medium, and cook, stirring often, until the leeks are soft, but not burned, about 6-7 minutes. Add the potatoes, stir well, and cook for 3-4 minutes, just enough to soften them a bit. Add the bay leaves, fresh thyme, vegetable broth, sea salt, and pepper, and cook, partially covered, until the vegetables are tender, about 45-50 minutes. Take off the heat, fish out the bay leaves and thyme sprigs, and add the coconut milk. Blend using a hand blender, or otherwise transfer to a blender or food processor, and pulse until desired consistency. Serve garnished with chives, green onions, or parsley. Bon appétit!