Rockfish and Mussels Thai-Style Curry Soup

Ingredients

• 2 Tbsp coconut oil
• 1 onion (sliced lengthwise into thin slices)
• 3 or 4 makrut lime leaves
• 3 cloves of garlic (peeled and minced or crushed)
• 2 pieces of gingerroot (each about 2 inches, sliced finely into matchsticks)
• 2 Tbsp Thai red curry paste
• 2 Tbsp rice vinegar
• 4 Tbsp freshly squeezed lime juice plus 3 or 4 whole limes for serving
• 2 - 14 oz cans coconut milk
• 1 tsp fish sauce
• 2 cups diced sweet potato
• 1 lb rockfish (pin bones removed and cut into 1 inch pieces (see tip))
• 1 bunch spinach (chopped to make about 4 cups)
• 1/2 lb live mussels (scrubbed, beards removed)
• 2 green onions (green and white parts sliced)
• 1/2 cup chopped cilantro
• 2 or 3 fresh Thai red chilis (sliced, for serving)