“Christmas Congee” Is the Best Way to Use Up Leftovers

When the congee is boiling, reduce the heat as needed to maintain a brisk simmer. Add the ginger, garlic, and scallion whites. Stir to combine. Simmer uncovered, stirring occasionally and making sure to scrape to the bottom of the saucepan, until very creamy and thickened, 30 to 35 minutes. Meanwhile, prepare the toppings.