Rayu Chili Sesame Oil Japanese Chinese Flavor Condiment

Japan; adapted from Chinese chili oil; S&B taberu rayu popularization 2009 created new category

Rayu (spicy sesame oil) is Japan's most widely used chili-infused condiment—sesame oil infused with dried red chili, garlic, and sometimes additional aromatics (sesame seeds, negi, ginger), used as a finishing condiment across Japanese-Chinese hybrid dishes, gyoza, ramen, and cold tofu. The Japanese version is distinctly different from Chinese chili oil: S&B Brand's taberu rayu ('eating spicy oil') popularized a new category of rayu with substantial solid content (crunchy garlic and chili pieces suspended in the oil rather than filtered out) that became a sensation in 2009. This eating-format rayu is spooned directly over rice, mixed into pasta, and applied to poached or fried eggs. The base sesame oil is typically toasted (roasted) sesame oil with a rich, nutty fragrance. The chili can be ichimi, dried hontaka, or Korean-style gochugaru (adding a richer chili flavor). Homemade rayu can be calibrated for heat level and texture. Rayu's oil base means a small amount provides significant flavor—the capsaicin is dissolved into the oil, giving sustained heat rather than acute spiciness. Standard application: several drops drizzled over gyoza dipping sauce, a small spoon over cold silken tofu, or mixed into ramen bowl at the table.

• Chili-infused oil as condiment with sediment content poured over noodles—the Chinese tradition Japan adapted and transformed → Hong you chili oil Sichuan poured over noodles Chinese
• Sesame oil as base for aromatic chili finishing condiment across Korean preparations → Sesame oil with gochugaru seasoning final drizzle Korean

Rich toasted sesame; sustained capsaicin heat; garlic and chili fragrance; solid-version adds crunch