The Making of Cured Vanilla Bean

Vanilla is an orchid, a climbing vine grown in tropic climates. It is cultivated mostly on the islands along the Indian Ocean though it’s reported to originate from Mexico. It takes 3-5 years for the plant to fully grow and flower to enable pollination. Madagascar vanilla beans, Tahitian vanilla beans

The process of self-pollinating the flower to produce the fruit seed pod and harvesting the crop is completely manual and very labor-intensive. After pollination, it takes about 6 weeks for the fruit to develop and another 7 months to mature. Harvesting involves a manual process of identifying the beans with the required length and color. Each region has a slightly different method of curing the vanilla pods. Nevertheless, the curing of the vanilla bean pod involves a step-wise process of Killing, Sweating, Drying and Conditioning. During the killing, the green vanilla pods are immersed in steaming hot water for a few minutes to trigger the enzymatic processes that form the characteristic aroma of vanilla. The pods are then quickly rolled-up in wool blankets to keep the beans warm and humid (Sweating) for a couple more days. This process maintains an optimal condition for the triggering enzymes to function. The vanilla bean pods are then slow dried to about 30% moisture content, where the pods are exposed to the sun during the early part of the day and moved to shade during the late hot afternoons.

The beans are further conditioned by storing in wooden boxes for several months to increase the fragrance. Generally, vanillin, the main aromatic component of vanilla is less than 1% of the vine-ripened fruit pod’s weight, but the curing process could increase it to 2-3.5%.

Grading of The Cured Vanilla Bean

Vanilla bean pods are graded after they are cured, conditioned and ready for use. The grading is based on moisture content, length of the pod and lack of dehiscence/wholesomeness of appearance. High moisture content, long, oily and dark bean pods with no splits/dehisces are given the highest grade, A, the Gourmet grade. The Gourmet grade/Prime grade/Grade A, typically has about 30% moisture content, are 5.9″ (15cm) or longer and 1lb contains between 100-120 pods. The grade B beans have about 15-25% moisture content, are relatively shorter, about 3.9″-5.8″, may have some blemishes and 1lb contains about 140-160 bean pods. The cured fruit seed pod with the vanilla flavor houses thousands of tiny, black seeds. The pods and the seeds are both useful for culinary purposes.

Madagascar Bourbon Gourmet Vanilla Bean

Madagascar Bourbon Gourmet Vanilla BeanVanilla planifolia otherwise known as Madagascar Bourbon Vanilla (named after two islands in the Indian ocean noted for cultivating the crop) is an orchid grown in humid tropic climate. It is cultivated mostly along the Indian Ocean, especially Madagascar, Réunion (formerly known as Bourbon), Comoros, French Polynesia and Indonesia, though it originated from Mexico. Indonesia and Madagascar supply about 70% of the world’s vanilla bean. Madagascar Bourbon Vanilla (Vanilla planifolia) is by far the most popular of the 3 cultivated vanilla species – Vanilla planifolia, Vanilla tahitiensis and Vanilla pompona.

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Tahitian Gourmet Vanilla Bean

Tahiti vanilla beansVanilla tahitiensis otherwise known as Tahitian Vanilla is cultivated mostly along the arable lands of the south pacific especially French Polynesia-Tahiti, Papua New Guinea and Indonesia. The Tahitian Vanilla, unlike the Madagascar Bourbon species (Vanilla planifolia) is rare; it’s only a small fraction of the world’s natural vanilla production and deservedly nicknamed “the Queen of Vanilla” (1, 2). It has a floral taste and fragrance, different from the Madagascar Bourbon species. The bean pod is also stouter (plumper) than the Madagascar Bourbon species, and have higher oil and moisture content (1). The high cost of vanilla bean is driven mostly by the careful and tedious process of pollination, harvesting and curing of the pod.

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1. Brunschwig C, Collard FX, Lepers- Andrzejewski S, Raharivelomanan P. Tahitian Vanilla (Vanilla ×tahitensis): A Vanilla Species with Unique Features. Active Ingredients from Aromatic and Medicinal Plants Hany A El-Shemy, IntechOpen. 2017.
2. https://welcome-tahiti.com/vanilla-essence-of-tahaa/. Extracted 09/17/18.
3. Gu F, Chen Y, Fang Y, Wu G, Tan L. Contribution of Bacillus Isolates to the Flavor Profiles of Vanilla Beans Assessed through Aroma Analysis and Chemometrics. Molecules. 2015;20(10):18422-36.
4. Paramita V. and Yulianto ME. Effect of β-Glucosidase Activity on the Vanillin Enzymatic Formation by Using Rumen Liquid for Cell Walls Degradation. Journal of Food Research. 2013;2(2):65-9.