Şalgam suyu is a traditional fermented beverage that is popular in Istanbul. It is made from fermented turnips, carrots, and spices such as garlic, ginger, and red pepper flakes. Şalgam suyu has a tangy and slightly spicy flavor. It is often enjoyed as a refreshing drink with meals, particularly with kebabs. Şalgam suyu is also believed to aid digestion and is a unique taste experience for those visiting Istanbul.