Rinse the rice under cold water until the water runs clear. Drain well.
In a large pot, combine the rinsed rice, water or broth, salt, and ginger slices. Bring to a boil over high heat.
Reduce heat to low and simmer, partially covered, for 45-60 minutes, stirring occasionally to prevent sticking. The congee is done when the rice has broken down and the porridge is thick and creamy.
Remove the ginger slices. Serve hot with desired toppings.
Tips
For a thinner congee, add more water or broth during cooking.
Leftover congee can be refrigerated for up to 3 days; add a little water when reheating.
To make it more substantial, add cooked chicken, shrimp, or century egg.