The primary ingredient in traditional Korean kimchi is napa cabbage (also known as Chinese cabbage). This vegetable is fermented with a variety of seasonings, which often include garlic, ginger, chili pepper flakes (gochugaru), and fish sauce. The fermentation process gives kimchi its distinctive tangy and spicy flavor, along with its health benefits, as it is rich in probiotics. While napa cabbage is the most common base, other ingredients can vary widely, including radishes, scallions, and even fruits like pears. Kimchi is a staple in Korean cuisine, served as a side dish to accompany main meals.