Using Dry vs. Liquid Yeast in Brewing
Dry yeast is cheap and stable; liquid yeast offers far more strains. Here is how they compare on cells, shelf life, handling and when you need a starter.
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The short answer: dry yeast is cheaper, keeps for a year or more, and one 11 g sachet pitches a typical 5 gallon ale without a starter. Liquid yeast offers many more strains (lagers, Belgian, English, wild and blends) but holds fewer cells per pack, about 100 billion when fresh, and loses viability as it ages, so lagers and bigger beers usually need a starter.
| Dry yeast | Liquid yeast | |
|---|---|---|
| Cost | Low | Higher |
| Shelf life | A year or more, kept cool | A few months; viability drops over time |
| Strains | A good core range | Far more, including specialty strains |
| Starter needed? | Rarely; pitch more sachets instead | Often, for lagers and beers above about 1.060 |
| Handling | Sprinkle or rehydrate per the maker’s instructions | Shake, warm to room temperature, pitch or build a starter |
| Best for | Everyday ales, reliability, travel | Specific styles and house character |
How much to pitch for 5 gal (19 L)
| Beer | Dry yeast (11 g sachets) | Liquid yeast |
|---|---|---|
| Ale up to 1.050 | 1 | 1 fresh pack; a 1 L starter helps |
| Ale 1.050–1.075 | 1–2 | 1 pack with a 1.5–2 L starter |
| Ale over 1.075 | 2–3 | A 2–3 L starter |
| Lager around 1.050 | 2 | A 2–3 L starter |
Yeast that’s old, or was stored warm, needs more. A pitch-rate calculator that takes the date into account gives better numbers; our yeast starter guide covers the rest.
Using dry yeast
- Check the pack. Many dry strains are now sold as fine to sprinkle straight onto the wort. If yours is, that’s all there is to it.
- Or rehydrate it, which is a little gentler: sprinkle the yeast onto about 10 times its weight of boiled and cooled water (about 110 mL for 11 g) at the temperature the maker gives, usually somewhere between 77 and 95°F (25–35°C).
- Wait 15–30 minutes, then stir it into a cream.
- Match the temperature. Add a little wort to bring it within about 18°F (10°C) of the wort, then pitch.
Dry yeast is made with plenty of stored reserves, so a normal-strength ale ferments fine without extra oxygen. Keep unopened sachets in the fridge. Once opened, fold and seal the sachet and use it within a few days.
Using liquid yeast
- Check the date. The fresher the better; a calculator estimates how many cells are still alive.
- Warm it up. Take it out of the fridge a few hours before pitching. With a smack pack, break the inner pouch at the same time. Swelling shows it’s alive, but it doesn’t add many cells.
- Sanitize the outside of the pack and your scissors, shake well and pitch, or build a starter.
- Oxygenate the wort. Liquid yeast relies more on the oxygen in the wort. See how to aerate wort.
Strains: where each one wins
Dry yeast now covers most everyday brewing: clean American ale (SafAle US-05), English ales, German lager (SafLager W-34/70), wheat, Belgian, saison and kveik (LalBrew Voss). Many dry strains have close liquid equivalents: US-05, WLP001 and Wyeast 1056 are widely considered versions of the same clean American ale strain.
Liquid yeast still wins for specific character: particular English, Belgian abbey and German strains, and mixed cultures with Brettanomyces or souring bacteria. If a recipe names a liquid strain for its flavour, that’s usually why.
Frequently asked questions
Is liquid yeast better than dry?
Not by itself. The strain, the number of healthy cells and the fermentation temperature decide how the beer turns out. Pick the strain the style needs, in whichever form it comes.
Does dry yeast ferment faster?
It often starts faster, because one sachet holds more cells than one liquid pack. Pitch the same number of healthy cells and they behave the same.
Is dry yeast more tolerant of warm or cold temperatures?
No. Each strain has its own range, dry or liquid. Check the maker’s range and control the beer temperature either way.
Can I make a starter with dry yeast?
There’s no need. Another sachet is cheaper than a starter and gives you more cells.
Can I reuse dry yeast?
Yes. After one batch, the slurry is just yeast and can be harvested and reused like any other.
Related guides
How to make a yeast starter, harvesting and washing yeast, high gravity fermentation, ale vs lager fermentation and how yeast make beer.