Soak in wine. Vanilla pod, also called vanilla branch, is a valuable spice with a wide range of applications. Put vanilla seeds and vanilla pods in a sealed bottle and pour in vodka (choice of wine: vodka is not necessary, only tasteless wine can be used, the higher the alcohol content, the better, and the minimum alcohol content should not be lower than 30%. Too low alcohol content is not conducive to the dissolution of fragrance. ) stored in the dark. After one month, the solution can be taken when it turns dark brown, but it will taste better if it is stored for more than three months.