Granny Smith apples are a popular green-skinned apple variety known for their crisp texture, tart flavor, and vibrant color. Originating in Australia, these apples were first cultivated by Maria Ann Smith, also known as "Granny Smith," in the mid-19th century. Today, Granny Smith apples are grown in various countries, including the United States, New Zealand, South Africa, and parts of Europe, contributing to their global availability and widespread popularity.