How to Make Vanilla Extract
By Mia Hartwell
Vanilla extract is two ingredients and about five minutes of work. Beans, vodka, a jar. There is no cooking, no equipment, and almost nothing that can go wrong. The only real ingredient is patience, because after those five minutes you have to leave it alone for the better part of a year.
That trade is worth making. A small bottle of decent pure vanilla extract is startlingly expensive, and much of what is sold cheaply is imitation vanilla made from synthetic vanillin, which tastes flat and one-noted next to the real thing. Homemade extract, given enough time, is better than almost anything you can buy, and works out considerably cheaper per ounce.
This guide covers the bean to alcohol ratio that matches commercial strength, which beans and which spirits to choose and why, exactly how the flavour develops month by month, and the one mistake that can actually ruin a batch.
The Ratio
There is a real standard here rather than a guess. Commercially, pure vanilla extract at single fold strength is defined as roughly 13.35 ounces of vanilla beans per gallon of alcohol. Scaled down to a home batch, that comes out at:
- 5 to 6 vanilla beans per 1 cup of alcohol, which is about 1 ounce of beans per cup.
- Alcohol at 80 proof (40 percent), and never below 70 proof.
Double the beans and you have double fold extract, which is what a lot of professional bakers use. It is richer and you need less of it, but it costs about twice as much to make. Single fold is the sensible place to start.
Choosing Your Beans
One buying decision matters more than the rest: get Grade B beans, sometimes sold as extract grade. Grade A gourmet beans are plumper, glossier, and more expensive, and the reason they look that way is that they hold more moisture. For extract that is water you are paying extra for. Grade B beans are drier and more concentrated, and they make better extract for less.
Origin changes the character considerably:
| Bean | Flavour | Notes |
|---|---|---|
| Madagascar (Bourbon) | Creamy, sweet, classic | The default vanilla flavour most people picture |
| Tahitian | Floral, fruity, cherry | Lower in vanillin, better in no-bake desserts |
| Mexican | Spicy, smoky, bold | Pairs well with chocolate and cinnamon |
| Ugandan or Indian | Strong and punchy | Good value, robust enough for baking |
If you are making one jar, use Madagascar. It is the flavour people mean when they say vanilla, and it works in everything.
Choosing Your Alcohol
| Spirit | Profile | Notes |
|---|---|---|
| Vodka | Neutral and clean | The standard, lets vanilla speak for itself |
| Bourbon | Warm, caramel, oaky | Excellent in cookies, cakes, and pancakes |
| Rum | Sweet and rounded | Good with tropical and spiced baking |
| Brandy | Fruity and delicate | Softer, suits custards and creams |
Buy the cheap-to-middling bottle. Expensive vodka is refined to taste of as little as possible, which is exactly the quality you are about to bury under vanilla. Spending more here gains you nothing at all.
How to Make It
Five minutes now, then leave it alone.
Split the beans lengthwise
Run a sharp paring knife down the length of each bean to open it up. Do not scrape the seeds out. Most of the aromatic compounds are in the pod itself, scraping is fiddly, and the loose seeds only make the finished extract cloudy with sediment.
Cut them to fit your jar
Cut the split beans into lengths that will sit comfortably below the surface of the liquid. This is not about neatness. Anything poking above the alcohol is a mould risk, and that is the one way to lose a batch.
Cover completely with alcohol
Put the beans in a clean glass jar and pour over 1 cup of vodka for every 5 to 6 beans. Check that every piece is fully submerged. If any float up, weigh them down or cut them shorter and add a splash more vodka.
Seal, shake, and label
Seal it tightly and give it a good shake. Then write the date on it, because in four months you will genuinely not remember, and knowing the age is how you judge when it is ready.
Store it dark and shake it weekly
Keep it in a cupboard away from light and heat, and give it a shake once a week. The shaking keeps the extraction even and gives you a reason to check the liquid level. Do not refrigerate it, which only slows everything down.
Wait
Eight weeks is the earliest it is worth opening. Three months is properly good. Six to twelve months is where it becomes better than what you can buy. Start a second jar while you wait, and you will never be without it again.
How the Flavour Develops
The colour darkens within days, which fools people into thinking it is done. Flavour takes far longer.
| Age | Result | What it tastes like |
|---|---|---|
| 8 weeks | Usable | Pale, thin, still tastes of alcohol |
| 3 months | Good | Properly vanilla, fine for everyday baking |
| 6 months | Very good | Dark, rounded, the alcohol has mellowed |
| 12 months+ | Excellent | Deep and complex, better than most shop extract |
The Perpetual Bottle
The best way to run vanilla extract is never to finish it. Leave the beans in permanently, and every time you use some, top the bottle back up with fresh vodka. The beans keep giving for a long time, and the bottle deepens rather than depleting.
Add a fresh bean every few months, or whenever you have used a lot, and a jar started this year will still be improving in three years. It also means the waiting only happens once. Straining everything out and finishing the bottle puts you back at the start.
Storage and Shelf Life
Vanilla extract does not expire. At 40 percent alcohol there is nothing for spoilage organisms to do, and unlike most homemade things it genuinely improves with age. Keep it in a cupboard at room temperature, ideally in amber glass or at least out of direct light, since light slowly degrades the aroma compounds you waited months for.
Never refrigerate it. Cold slows extraction, can cloud the liquid, and achieves nothing that the alcohol is not already doing. If you are giving jars away as gifts, mention the dark cupboard, because a bottle that looks lovely on a sunny windowsill will fade there.
Common Mistakes to Avoid
Vanilla extract is nearly impossible to ruin, with one exception. The first mistake here is the only one that costs you the batch.
Leaving beans sticking out of the alcohol
This is the one genuine problem you can create. Alcohol is what preserves the beans, and any piece poking above the surface is exposed to air and its own moisture, which is enough for mould to take hold. Once mould appears anywhere in the jar the whole batch has to go, along with several months of waiting and the cost of the beans.
Do this instead: Cut the beans short enough to sit fully below the liquid, and top the jar up with vodka if the level drops. Check on it when you shake it each week.
Using it after four weeks
At a month the liquid has already turned brown, so it looks finished. It is not. The colour develops long before the flavour does, and young extract tastes thin, sharp, and distinctly of alcohol, because the vanillin and the hundreds of supporting aroma compounds have not had time to come out of the pod. People taste it, conclude the recipe failed, and give up.
Do this instead: Do not open it before 8 weeks, and treat 3 months as the real starting point. Start a second jar now so you are never waiting again.
Buying Grade A gourmet beans
Grade A beans look better and cost considerably more, and the reason they are plump and glossy is that they hold more moisture. For extract that moisture is simply water you have paid a premium for, since you want flavour compounds per gram, not appearance. It is the most common way people overspend on this.
Do this instead: Buy Grade B, sometimes sold as extract grade. They look drier and less attractive, and they make better extract for noticeably less money.
Using low proof alcohol
Alcohol strength does two jobs here: it dissolves the flavour compounds, and it preserves the beans. Below about 70 proof it does neither well, so extraction is weak and slow, and the higher water content raises the risk of spoilage over the months the jar is sitting there. This is not a place to use a 40 proof liqueur.
Do this instead: Use a spirit that is at least 70 proof, and ideally 80 proof at 40 percent alcohol. Ordinary mid-range vodka is perfect, and expensive vodka gains you nothing.
Scraping the seeds out of the pods
People assume the seeds are where the flavour is, because that is the visible part in ice cream. In fact the pod itself carries most of the aromatic compounds, and scraping is a fiddly job that gains you very little. It also makes the finished extract cloudy with sediment that will end up in everything you bake.
Do this instead: Just split the beans lengthwise and drop them in whole. The alcohol will reach everything it needs to over the following months.
Keeping it in the fridge
Refrigeration does nothing helpful for something preserved by 40 percent alcohol, and cold slows the extraction considerably, so a jar in the fridge takes far longer to mature. Cold can also cause some cloudiness. It is a habit borrowed from other homemade preserves where it genuinely matters.
Do this instead: Store it in a cupboard at room temperature, away from light and heat. It will keep indefinitely there and continue improving.
Storing it in clear glass on the counter
Light degrades the aroma compounds you spent months extracting, so a pretty bottle on a sunny windowsill is quietly undoing the work. Vanilla extract in a dark cupboard holds its character for years, while the same bottle in daylight fades noticeably within months.
Do this instead: Use amber glass, or keep clear bottles in a closed cupboard. If you are gifting it, mention that it wants a dark shelf.
Straining it out and finishing the bottle
Treating a jar as a single batch throws away its best feature. The beans keep giving for a long time, and a bottle that is topped up rather than emptied gets deeper and more complex every year. Straining everything out at six months means starting from zero the next time you want extract.
Do this instead: Leave the beans in and top the bottle up with fresh vodka whenever you use some. Add a new bean every few months and it will run for years.
Where to Use It
Beyond the obvious baking, homemade extract is noticeably better in anything where vanilla is the point rather than a background note. A splash in the wet ingredients when you cook from a jar of homemade pancake mix is probably the easiest way to taste the difference between real extract and imitation.
It is also the right way to flavour a simple syrup for coffee. Rather than dropping a whole vanilla pod into the pan as suggested in our guide on making iced coffee, a teaspoon of your own extract does the same job instantly. The same applies to a vanilla matcha latte, where vanilla softens the grassy edge, and to warm drinks such as mulled apple cider, where it rounds out the spices.
The short version
Split 5 to 6 Grade B vanilla beans per cup of 80 proof vodka. Cut them short enough to sit fully under the liquid, since exposed beans can mould. Seal, label with the date, and keep in a dark cupboard, shaking weekly. Usable at 8 weeks, good at 3 months, excellent at 6 to 12. Leave the beans in and top up with vodka forever.
The only real advice is to start today rather than when you next need vanilla, and to make more than one jar. Beans are cheaper in quantity, the work is identical, and spare jars are the easiest homemade gift there is.
For other things worth making yourself and keeping on hand, see the rest of our kitchen guides.
Frequently Asked Questions
How many vanilla beans do you need per cup of vodka?+
Use 5 to 6 vanilla beans per cup of alcohol, which is about 1 ounce of beans per cup. That matches the single fold strength that commercial pure vanilla extract is made to. Use double the beans for a double fold extract, which is richer and what many bakers prefer, though it costs roughly twice as much to make.
What alcohol is best for vanilla extract?+
Vodka is the usual choice because it is neutral and lets the vanilla come through cleanly. Bourbon adds warmth and caramel notes that suit cookies and cakes, rum brings sweetness that works well in tropical baking, and brandy is fruitier and more delicate. Whatever you pick, it needs to be at least 70 proof, and 80 proof at 40 percent alcohol is ideal.
How long does vanilla extract take to make?+
It is usable at about 8 weeks, good at 3 months, and genuinely excellent between 6 and 12 months. There is no shortcut. The alcohol needs time to pull the vanillin and hundreds of other aroma compounds out of the beans, and extract tasted at 4 weeks is thin and harshly alcoholic in a way that makes people think they did something wrong.
Should I use Grade A or Grade B vanilla beans?+
Grade B, which is confusingly sometimes labelled extract grade. Grade A beans are plumper and more attractive because they hold more moisture, and they cost more, but that extra moisture is water you are paying for. Grade B beans are drier and more concentrated in flavour compounds per gram, so they make better extract for less money.
Does homemade vanilla extract expire?+
No. The alcohol content preserves it indefinitely, and it genuinely improves for years rather than declining. Store it somewhere cool and dark and never refrigerate it. Many people keep a perpetual bottle going, topping it up with fresh vodka as they use it and adding a new bean every few months.
Can you make vanilla extract without alcohol?+
You can make a vanilla flavouring with food grade vegetable glycerin instead, using the same bean ratio and about 6 months of steeping. It will not be as strong, since alcohol is a far better solvent for vanilla compounds, and it keeps for around a year rather than indefinitely. Legally it cannot be called extract, but it works in baking.