Kaldu Buntut Pressure Cooker

Bahan-bahan (8 porsi)

• 2½ lb oxtails ((you can use up to 3 lbs/1.4 kg and add more water if needed))
• 6 cups water ((cold, for boiling the oxtails))
• 1½ knobs ginger ((1½ inches, 3.8 cm; unpeeled))
• 1 Tokyo negi (long green onion) ((you can substitute it with several green onions))
• 1 clove garlic
• 8 cups water ((for cooking the broth))
• 1 tsp Diamond Crystal kosher salt