Kreplach are small dumplings that are often served in soup during Purim. The dough is made with flour, eggs, water, and salt, and it is rolled out and cut into small squares. The filling can vary, but it is typically made with ground meat, onions, and spices. The squares of dough are filled with a spoonful of the meat mixture, and then they are folded over and sealed to form a triangle shape. The kreplach are then boiled in soup until cooked through and tender. They add a delicious and comforting element to any Purim meal.