Vanilla in beer: whole beans or extract and how much to use
Vanilla turns up in pastry stouts, porters, cream ales and milkshake IPAs. It is easy to add and very easy to overdo. Here is how to choose between beans and extract, how much to use and how to keep it clean.
Beans, extract or essence
Whole vanilla beans are the cured seed pods of the vanilla orchid. They give the fullest, most layered flavour, with woody, floral and sweet notes beyond plain vanillin. India grows vanilla in Kerala and Karnataka, alongside the better known Madagascar Bourbon beans and the floral Tahitian type.
Pure vanilla extract is vanilla soaked in alcohol. It is consistent and easy to dose precisely, which suits repeat batches.
Vanilla essence, as sold in most Indian grocery shops, is often synthetic vanillin with flavouring and colour. It gives a flat, one-note sweetness that tastes artificial in beer. Read the label and avoid essence for brewing.
How much to use
Vanilla quality and strength vary a lot, so these are starting points for a 20 litre batch:
- Beans: 1 to 3 beans for one to two weeks. One bean gives a background note in a porter. Three gives an obvious vanilla stout.
- Pure extract: dose to taste at packaging (see the bench trial below), often somewhere in the range of 10 to 30 ml for 20 litres.
Strong, dark, sweet beers carry more vanilla. A pale cream ale needs far less.
Preparing beans
- Split each bean lengthways with a clean knife.
- Scrape out the seeds and chop the pod into short pieces.
- Soak seeds and pod in just enough vodka or another neutral spirit to cover, for a few days to a week. This sanitises them and starts extracting flavour.
- Add the whole lot, spirit included, to the fermenter after primary fermentation has finished.
- Taste every two or three days. Remove the beans when the flavour is just short of where you want it.
Putting the pieces in a sanitised mesh bag makes removal easier. Without it, the tiny seeds float around and end up in the bottles.
The bench trial for extract
Extract makes precise dosing easy. Measure 100 ml of the finished beer into a few glasses. Using a syringe or measuring dropper, add extract at different rates, for example 0.05 ml, 0.1 ml and 0.15 ml per 100 ml. Taste them side by side, choose the best, then scale up to your batch volume. A glass of 0.1 ml per 100 ml becomes 20 ml in 20 litres.
This takes ten minutes and avoids the classic mistake of pouring extract straight into the fermenter by eye.
When to add vanilla
Add vanilla after fermentation is done. Adding it to the boil wastes most of its aroma. Adding it during active fermentation lets CO2 carry aroma away. Late addition keeps the delicate notes. In a hot Indian room, extraction from beans runs faster, so taste sooner than a recipe written for cooler weather suggests.
Styles that suit vanilla
- Stouts and porters. Vanilla softens roast and pairs with chocolate. Combined with lactose, it gives the classic pastry stout. See our guides to milk and oatmeal stout and imperial stout.
- Coffee beers. Vanilla and coffee are an easy match. Our guide to adding coffee to beer covers that side.
- Cream ales and blondes. A small dose adds a rounded, dessert-like edge.
- Hazy IPAs. The milkshake style, often with lactose and fruit.
Common problems
- Artificial or perfumed taste. Usually synthetic essence or too much extract. Bench trial before dosing.
- Woody or bitter edge. Beans left in too long, especially in warm conditions. Pull them sooner.
- Black specks in the glass. Loose vanilla seeds. Use a mesh bag and rack carefully.
- Vanilla faded in a few weeks. Aroma does soften with time and warm storage. Dose slightly higher for beers that will sit, or drink them fresh.
Cost and consistency
Good vanilla beans are expensive and prices swing with harvests. For a single homebrew batch, beans are worth it. For a beer you plan to repeat often, extract makes it easier to hit the same flavour each time. Some brewers use both: beans for depth, then a small extract top-up at packaging to hit the target.
Store beans sealed in a cool, dark place so they stay supple. Dry, brittle beans have lost much of their aroma. Record exactly what you used, where it came from and for how long in your brew log, so a great batch can be repeated.
Common questions
How many vanilla beans for 20 litres of beer?
Usually 1 to 3 beans for one to two weeks, depending on the beer and how strong you want the vanilla.
Can I use vanilla essence in beer?
It is better not to. Grocery essence is often synthetic and tastes flat. Use pure extract or whole beans.
When should I add vanilla?
After primary fermentation has finished, so the aroma is not lost in the boil or carried off by fermentation CO2.
How do I sanitise vanilla beans?
Split and chop them, then soak in vodka or another neutral spirit for a few days before adding.
