The custom of topping a tree also goes back to Prince Albert's time. For his family's tree, he chose an angel, helping to remind us that the focus of the Christmas story is on one particular family.
Experts say people who are afraid of running out of gas are topping off their tanks or storage cans when they don't actually need it, and that that's hurting availability.
Domino's has 25 supply chain centers in the US where dough is mixed and toppings are prepared before being sold to franchise stores where pizzas are assembled and baked.