Begin by rinsing the live mussels under cold water. Scrub the shells to remove any dirt or debris. Discard any mussels that are open and do not close when tapped.
In a large pot, heat the cooking oil over medium heat. Add the diced onion and sauté until translucent, about 3-4 minutes. Then, add the minced garlic and grated ginger, stirring for another minute until fragrant.
Stir in the diced tomato and your choice of leafy greens. Cook for 2-3 minutes until the greens are wilted and the tomatoes have softened.
Pour in the vegetable broth and bring to a gentle simmer. Stir in the Miso & Easy (or miso paste) until fully dissolved. Adjust the seasoning with hot chili sauce according to your spice preference.
Add the cleaned mussels to the pot. Cover with a lid and steam for about 5-7 minutes, or until the mussels have opened. Discard any mussels that remain closed.
Once the mussels are cooked, serve them in bowls with a generous ladle of broth. Squeeze fresh lime juice over the top to brighten the flavors. Enjoy your Spicy Steamed Mussels in Miso Broth hot!