You’ll want to start preparing the bitter melon first, since it requires the most time and labor. The rest of the stew assembly will fly by!
Slice the bitter melon in half lengthwise and use a large spoon to scoop and scrape out the seeds. Remove any additional inner membrane as well, and discard. Slice the seeded gourd into 1/4-inch half moons and toss them in a large bowl with a generous pinch of salt. Don’t be shy because it will be washed away later on; go for 1/2 teaspoon at least. Let sit for at least 20 minutes while you slice and chop the remaining vegetables.
Bring a medium pot of water up to a roiling boil. Add in the salted bitter melon and cook for about 10 minutes. Drain and immediately rinse with cold water.
Return the pot to the stove over medium heat and add the oil. Once shimmering gently, begin to saute the garlic and ginger. After two minutes, introduce the seitan. Stir frequently and cook until the mixture is aromatic and the chunks of seitan are lightly browned all over; about 10 minutes. Add in the rest of the vegetables together, sauteing for an additional 5 – 8 minutes.
Pour in the first 5 cups of vegetable broth along with all of the remaining ingredients. Mix well, reduce the heat to medium-low, and simmer for about 20 minutes, until all of the vegetables are fork-tender. Add more broth if you’d prefer a soupier stew, and serve steaming hot! Pair with sticky rice to complete the meal.