To make a soy braised swai recipe, you'll first need to prepare the ingredients for the recipe. Wash the shiitake mushrooms and chop them into small cubes. Cut the mushrooms in half lengthwise and remove the seeds. Peel the skin and cut the mushroom halves into 12 inch thick slices. Place the slices in the pot and cover with water. Bring the water to boil, then reduce the heat to medium-low and simmer for 20 minutes. Remove the pan from heat and add the vegetable broth, sugar, salt, and pepper to taste. Simmer for an additional 5 to 10 minutes, or until the vegetables are tender and the broth is reduced by half.