Chili oil—an oil infused with chili peppers and spices used as a spicy condiment in Chinese and Japanese cuisine (commonly written ラー油 or 辣油).
餃子にラー油を少し垂らして食べるのが好きだ。
I like to drip a little chili oil on my gyoza before eating.
スープが薄ければ、ラー油で辛さを足してみてください。
If the soup is bland, try adding some chili oil to increase the spiciness.
市場で手作りの辣油を買ってみたら香りが良かった。
I bought handmade chili oil at the market and it had a great aroma.