1, vanilla extract on the market now is mainly divided into natural vanilla extract and artificial vanilla extract. Natural vanilla extract is a brown liquid that extracts fragrance from vanilla pods, and the fragrance of vanilla pods is extracted with alcohol. Artificial vanilla extract is an additive made of chemical substance (scientific name: 4- hydroxy -3- methoxybenzaldehyde), which tastes very similar to natural vanilla extract and has relatively low cost.

2. Vanilla pods are native to Central America and South America. At present, vanilla pods sold in the market are mainly divided into bourbon varieties and Tahiti varieties, among which the output of Madagascar vanilla in bourbon varieties accounts for more than 60% of the world.