What is knobby russet apple?

The Knobby Russet apple is an heirloom variety that originated in the United States in the early 1800s. It is a medium to large-sized apple with a greenish-yellow skin that is covered in rough, knobby bumps. The flesh is crisp, yellow, and juicy with a tangy flavor and a slightly nutty undertone. Knobby Russet apples are good for eating fresh, cooking, and making cider. They are also known for their long storage life, often lasting several months in cool, dry conditions. The trees are hardy and disease-resistant, making them a popular choice for home orchards and commercial growers.