Portuguese sweet bread is a traditional bread originally made for Christmas and Easter that has become popular in Hawaiian and New England cuisine due to Portuguese immigrants. It can go by names like Massa Sovada, Massa, or Pao Doce and contains ingredients like yeast, warm water, sugar, mashed potatoes, ginger, milk, salt, eggs, castor sugar, butter, and flour. The bread is mainly served during the holiday seasons of Christmas and Easter as a festive dish.