For the congee:
8 cups water
3 bone-in, skin-on chicken thighs (about 1 1/2 pounds)
1 cup long-grain white rice, preferably jasmine
4 (1/4-inch-thick) slices fresh ginger, smashed
2 teaspoons kosher salt, plus more as needed
Optional toppings:
Roasted peanuts
Thinly sliced scallions
Minced fresh ginger
Fresh cilantro leaves
Tamari or soy sauce
Place all the ingredients for the congee in a 5-quart or larger slow cooker. Cover the slow cooker and cook until very creamy and the rice is completely broken down, 8 to 10 hours on the LOW setting or 5 hours on the HIGH setting.
Remove the chicken and ginger to a plate. Stir the congee with a wooden spoon, making sure to scrape against the bottom and sides of the slow cooker to incorporate congee that’s sticking there.
Shred the chicken, then stir the meat back into the slow cooker, discarding the bones, skin, cartilage, and ginger. If you would like a thinner congee, add additional water 1/4 cup at a time until you reach the desired consistency. Taste and season with more salt as needed. Serve hot with the toppings.