Zucchini noodles, also known as zoodles or courgetti, are a low-carb alternative to traditional pasta made from shredded zucchinis. The process involves using a spiralizer or a grater to transform the vegetable into long, thin strands that resemble spaghetti or other types of noodles. These noodles can be used in various dishes such as stir-fries, salads, and pasta bowls, providing a healthy and flavorful option for those following a low-carb diet or looking to reduce their carbohydrate intake.