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Layu, also known as Japanese chili oil, is a fiery and aromatic condiment integral to many Asian cuisines, including Japanese. Made by infusing oil, often sesame, with chili peppers and sometimes additional ingredients like garlic or ginger, it offers a complex blend of heat and flavor.
Chefs use layu to add a spicy dimension to dishes such as ramen, dumplings, and stir-fries, either incorporated during cooking or drizzled on top as a finishing touch, enhancing the dish.