Mince the shrimp until it forms a paste. In a medium bowl, mix the shrimp paste with the seasonings until well combined.
1 cup shrimp, ¼ tsp salt, ¼ tsp black pepper, ½ tsp chicken bouillon powder, 1.5 tsp tapioca starch
In a large pot over medium heat, add oil and sauté the garlic for about 1 minute until fragrant.
½ Tbsp garlic
Pour in the water and chicken stock and bring the mixture to a boil.
1.5 cups water, 1 cup chicken stock
Scoop small portions of the shrimp paste into balls and drop them gently into the boiling stock. Reduce the heat to a simmer and cook for 3–4 minutes until the shrimp is cooked through.
Increase the heat to medium, then add the tomato, tofu, and seasonings. Cook for another 3–4 minutes.
1 tomato, ½ block medium firm tofu, ½ tsp salt, ½ Tbsp fish sauce, 1 tsp chicken bouillon powder, ½ tsp black pepper
Add the mustard greens and cook for about 2 minutes until the greens are just wilted.
2 cups mustard greens
Garnish with black pepper and green onions, then serve hot.