How to Make It
Line a 6-quart slow cooker with a slow cooker liner, if desired. Add pork, squash, onion, coconut water, fish sauce, soy sauce, ginger, garlic, salt, and pepper; stir to combine. Cover and cook until pork is very tender, 7 to 8 hours on low or 5 to 6 hours on high.
To serve, drain pork and squash mixture, reserving 2 cups cooking liquid. Shred pork using your fingers or 2 forks, discarding any large pieces of fat. Serve pork over rice, garnished with scallions and, if desired, chile.
Instant Pot variation (1 hour):
Follow prep instructions above and lock lid in place. Turn steam-release handle to sealing position. Select Manual or Pressure Cook (depending on model) and set to high pressure for 20 minutes. Carefully turn steam-release handle to venting position and let steam fully escape (float valve will drop). Release lid and turn off cooker. Follow serving instructions above.
Let stew cool to room temperature. Transfer to sealable freezer-safe containers and cover with reserved cooking liquid. Cover and freeze for up to 3 months. Thaw in microwave or overnight in refrigerator.