Ginger oil is made by pressing a spice called litsea cubeba, which can improve the taste and remove the fishy smell. People in Guizhou use it a lot, and it is often used to make sour soup fish. It has a strong smell. If you eat it for the first time, just put 1 or 2 drops into a pot of soup or stew. Wood ginger oil is abundant in Hongya County, Sichuan Province. Litsea litsea is a unique condiment in Yunnan, Guizhou and Sichuan, which is deeply loved by local ethnic minorities.

Litsea cubeba oil, also known as Litsea cubeba and Solanum melongena, is a shrub plant of Litsea cubeba in Lauraceae. The outer layer of its seeds contains volatile oil, and litsea cubeba oil can be distilled and extracted.