Pour 4 cups of water into a cooking pot and bring it to a boil.
4 cups water
Add the celery, 3/4 cup of the diced onion, the whole peppercorns, and the chicken.
1 cup celery, 1 1/2 cups onion, 1 teaspoon whole peppercorns, 1 lb chicken
Simmer for 40 to 60 minutes, or until the chicken is fully cooked and tender. Remove the chicken and let it cool slightly.
1 lb chicken
Separate the chicken meat from the bones and skin. Shred the meat into bite-sized pieces and set aside.
1 lb chicken
Strain the cooking liquid and reserve the chicken broth.
Soak the sotanghon noodles in water until softened. Drain and set aside. If using wood ear mushrooms, soak them separately until rehydrated, then drain and slice them thinly.
1/2 lb sotanghon, 1/2 cup dried wood ear mushrooms
Soak the annatto seeds in 1/4 cup of warm water for 15 minutes. Rub the seeds gently to release their color, then strain and discard the seeds.
2 tablespoons annatto seeds, 1/4 cup warm water
Heat the cooking oil in a wok or cooking pot.
2 tablespoons cooking oil
Sauté the garlic and the remaining 3/4 cup of diced onion until the garlic turns lightly golden and the onion softens.
2 to 3 tablespoons garlic, 1 1/2 cups onion
Add the shredded chicken and sauté for 2 minutes.
1 lb chicken
Pour in the annatto water and 2 cups of the reserved chicken broth. Bring to a gentle boil.
2 tablespoons annatto seeds
Add the carrots and half of the chopped green onions. If using wood ear mushrooms, add them at this stage. Cook for 3 minutes.
1/2 cup carrots, 1 cup green onions, 1/2 cup dried wood ear mushrooms
Add the softened sotanghon noodles and the fish sauce. Toss gently and cook for 2 to 3 minutes, adding more of the reserved chicken broth a little at a time as needed, until the noodles are tender and have absorbed most of the liquid.
1/2 lb sotanghon, 2 tablespoons fish sauce
If using cabbage, add it and toss gently for 1 to 2 minutes, or until just tender.
1 cup cabbage
Transfer to a serving platter and garnish with the remaining green onions. Serve hot with calamansi or lemon wedges on the side. Share and enjoy!
1 cup green onions, calamansi or lemon wedges