Most vanilla extract tutorials tell you to “put a few beans in a bottle of vodka and wait.” That produces vanilla-flavored vodka, not extract. Real vanilla extract — the strength you buy in a store, the strength that performs in recipes — is defined by a federal standard, and it uses far more beans than most guides admit.

This guide gives you the actual numbers: the FDA single-fold ratio, why Grade B beans are the professional choice, which alcohol to use, how long extraction really takes, what a pound of beans yields, and how the math changes at commercial scale.

The FDA single-fold standard: the only ratio that matters

Under the FDA’s standard of identity for vanilla extract (21 CFR 169.175), a product labeled “vanilla extract” in the US must contain:

• 13.35 ounces of vanilla beans per gallon of finished extract — measured for beans at 25% moisture or less
• At least 35% ethyl alcohol by volume (70 proof)

That bean content is called one fold. Double-fold (2X) extract uses twice the beans per gallon — 26.7 oz at the reference moisture, or ~27.8 oz of our 28%-moisture extract grade — and commercial folds go higher still for industrial use.

Two details almost every home guide misses:

1. The ratio is moisture-adjusted. 13.35 oz/gal is written for beans at ≤25% moisture. Almost no cured bean on the market is that dry, so almost every batch needs adjusting upward. The FDA is really asking for a fixed weight of moisture-free bean solids — 13.35 × 0.75 = 10.01 oz of dry solids per gallon — and you scale the wet weight to hit it. Evanille’s Ugandan beans:
   • Extract grade / Grade B at 28% moisture: 13.35 × (0.75 / 0.72) = ~13.9 oz per gallon
   • Grade A gourmet at 32% moisture: 13.35 × (0.75 / 0.68) = ~14.7 oz per gallon

   Use the textbook 13.35 oz number with either grade and your extract comes out legally — and audibly, in taste tests — under strength. Ask any supplier for a moisture figure; without it you cannot compute your real fold.

2. “Number of beans” is meaningless. Bean weight varies with length and lot. Our beans run 5–6 inches (13–15 cm) and about 3.0–3.6 g each — roughly 125–150 beans per pound — but recipes that say “5 beans per cup” can be off by 100% either way. Weigh your beans. Always.

Single-fold ratio table (Evanille extract grade / Grade B, 28% moisture → 13.9 oz/gal)

*Counts assume 3.0–3.6 g per bean at 125–150 beans/lb — illustrative only. Weigh.

For Grade A at 32% moisture, multiply every weight above by 1.06 (1 gallon = 14.7 oz / 417 g, roughly 115–138 beans).

The metric shorthand worth memorizing: single-fold ≈ 105 g of our extract-grade beans per liter of alcohol.

Grade B vs Grade A for extraction: why pros use B

Grade A (“gourmet”) and Grade B (“extract grade”) beans come off the same vines; the difference is moisture and appearance. Our Grade A is plump and supple at 32% moisture; our extract grade runs 28% — drier, but not dramatically so.

For extraction, Grade B still wins, though for narrower reasons than most guides claim:

• Price does the heavy lifting. Grade B costs substantially less per pound than Grade A for beans off the same vines, with the same 2.5% vanillin. That is the whole argument, and it is a big one.
• Cosmetics are irrelevant. Splits, blemishes, and short beans extract identically; the alcohol doesn’t care. You are refusing to pay for looks.
• Split pods extract faster. Extract-grade lots are largely split, which means the seeds and inner wall are already exposed — the same head start you’d otherwise create by hand with a knife.
• Slightly more solids per pound — emphasis on slightly. At 28% vs 32% moisture, a pound of Grade B carries about 6% more dry bean solids than a pound of Grade A (72% vs 68%). Real, but marginal. Guides that tell you Grade A is “mostly water” compared to Grade B are describing beans nobody sells.
• Neither grade uses the textbook ratio. Both are wetter than the FDA’s 25% reference, so both need adjusting: ~13.9 oz/gal for Grade B, ~14.7 oz/gal for Grade A. Grade B needs about 5% less weight per gallon — not 15%.

Save Grade A for applications where you use the bean itself — scraping caviar, infusing custards, showcasing pods. For the full breakdown, see Grade A vs Grade B vanilla beans.

Origin also matters more than most tutorials acknowledge. High-vanillin origins give you more flavor at the same legal ratio — one reason Ugandan extract-grade beans, with their bold, chocolate-toned profile and vanillin at the top of the typical range, have become a favorite of commercial extract makers. (More on the origin: Ugandan Vanilla Beans: The Complete Guide.)

Choosing your alcohol

The FDA requires a minimum of 35% ABV in the finished extract. Practical guidance:

Skip anything under 70 proof — you’ll fail the standard and risk poor preservation. Expensive premium spirits are wasted here; clean mid-shelf is the professional move.

Method and timing

1. Weigh the beans for your batch size (table above).
2. Split lengthwise, then cut into 1–2 inch pieces. More exposed surface area = faster, more complete extraction. (Commercial producers chop or grind for the same reason.) Leave every seed and scrap in.
3. Submerge fully in the alcohol in a sealed glass container. Any exposed bean can mold.
4. Store cool and dark, shaking once a week or so.
5. Wait — genuinely. The FDA sets no minimum time, but flavor chemistry does:
   • 1–2 months: usable but thin
   • 3–6 months: good depth for most uses
   • 6–12 months: full extraction — this is where single-fold extract earns its name
6. Strain or don’t. Leaving beans in continues developing flavor; strain through fine mesh and coffee filter for a clean commercial appearance.

Yield: what a pound of beans actually makes

At the moisture-adjusted single-fold ratio (13.9 oz/gal for our 28%-moisture extract grade), 1 lb of Grade B beans yields ~1.15 gallons (about 4.4 liters) of extract — roughly 147 fl oz, or about 36 four-ounce retail bottles.

At 32% moisture, Grade A yields about 5% less per pound: roughly 1.09 gallons, or ~34 four-ounce bottles.

Run the numbers against retail extract prices and the economics are obvious — which is exactly why small-batch extract businesses are booming, and why your bean cost per pound is the variable that decides your margin. Buying extract-grade beans at true wholesale pricing rather than retail-bulk pricing typically cuts the input cost dramatically.

Commercial-scale notes

Scaling from mason jars to sellable product introduces a few realities:

• Label law is strict. To print “vanilla extract,” you must meet 21 CFR 169.175: the fold ratio, ≥35% ABV, and permitted optional ingredients only (sugar, glycerin, etc. as listed). Under-beaned product must be labeled “vanilla flavoring” — and competitors do check.
• Percolation beats maceration for speed. Commercial producers circulate warm (not hot) alcohol through chopped beans over days-to-weeks instead of soaking for months. Cold maceration remains the artisan claim; percolation is how the big houses hit volume.
• Buy beans on specs, not photos. Moisture content and lot traceability are what determine your true cost per gallon of legal extract. A supplier who can’t state moisture can’t tell you your real fold math.
• Supply continuity is a business risk. An extract business that can’t get beans in March because its supplier sold out of the annual Madagascar shipment is a seasonal business. Uganda’s two harvests a year mean importers like Evanille hold US-warehoused stock year-round, shipped from Florida — overnight when a production run can’t wait.
• Spent beans have value. Post-extraction beans can be dried and ground into vanilla powder for sugar blends or secondary products.

Ready to run your numbers? Browse extract-grade (Grade B) Ugandan vanilla beans or get wholesale volume pricing — published from a single pound upward, with tonne lots quoted under contract.

FAQ

What is the FDA ratio for vanilla extract?

Single-fold vanilla extract requires 13.35 oz of vanilla beans (at ≤25% moisture) per gallon, in alcohol of at least 35% ABV, per 21 CFR 169.175. Real cured beans are wetter than that reference, so the weight scales up: our extract grade at 28% moisture needs ~13.9 oz per gallon (about 105 g per liter), and Grade A gourmet at 32% needs ~14.7 oz per gallon.

Are Grade B beans really better for extract than Grade A?

For extraction, yes — mainly on price. Both grades come off the same vines at the same 2.5% vanillin, and the moisture gap is narrower than folklore suggests: 28% for extract grade against 32% for Grade A, which is about 6% more dry solids per pound, not a landslide. What actually decides it is that Grade B costs far less, its split pods expose more surface area for extraction, and its cosmetic flaws are invisible once the beans are chopped into alcohol. Both grades need a moisture adjustment: ~13.9 oz/gal for Grade B, ~14.7 oz/gal for Grade A.

How long does homemade vanilla extract take?

Plan on 6–12 months for full single-fold strength with chopped beans in 40% ABV alcohol. It’s usable earlier but noticeably thinner. Commercial producers shorten this to days or weeks using warm-alcohol percolation systems.

How many vanilla beans per cup of vodka?

By weight: 25 g (0.87 oz) of Grade B beans per 8-oz cup for single-fold strength — typically 7–8 of our extract-grade beans at 125–150 beans per pound, but bean sizes vary enough that weighing is the only reliable method.

Can I reuse vanilla beans for a second batch of extract?

You can, but the second run will be well below single-fold strength — most of the extractable flavor leaves in batch one. Better uses for spent beans: dry and grind them into vanilla powder, or bury them in sugar for vanilla sugar.

What alcohol makes the best vanilla extract?

A neutral 40% ABV spirit (standard vodka) is the professional default — it meets the FDA’s 35% minimum with margin and lets the bean’s own profile lead. Bourbon or rum work as deliberate flavor choices, especially with bold, chocolatey Ugandan beans.