When a yeasted dough just sits there, the cause is almost always one of three things: the yeast is old or was damaged by hot liquid, the dough is too cold, or there’s far less yeast in it than the recipe intended. Less often, the dough rose while you weren’t looking and has already fallen. Work through those in order and you’ll find the culprit in a few minutes.
The good news is that a slow dough is often fine. It just needs a warmer spot and more time.
A quick diagnosis
| What you see | Likely cause | First thing to try |
|---|---|---|
| No change at all after an hour in a warm room | Dead or very old yeast | Test the yeast; add fresh if needed |
| Some rise, but very slow | Cold dough or too little yeast | Move it somewhere warm and wait |
| Rose, then sank and looks wrinkled | Overproofed | Reshape and give it a short second rise |
| Rises a little, feels stiff and dense | Too much flour, or heavy whole grain | Add water next time; weigh the flour |
| Very slow in a sweet dough | Sugar slowing the yeast | More time, or more yeast next time |
Is the yeast alive?
Dried yeast lasts a long time unopened, but it does fade, especially once the packet is open and kept somewhere warm. Fresh yeast is far more perishable and should be used within a week or two of buying.
To test dried yeast, stir a teaspoon of sugar into about 60 ml (¼ cup) of water at roughly 40 °C (105 °F), then add the yeast. Within 10 minutes it should look foamy and smell yeasty. If nothing happens, the yeast is the problem, and no amount of waiting will fix the dough. The test works for instant yeast as well as active dry, even though instant doesn’t need dissolving in normal use.
Store opened dried yeast in an airtight container in the fridge or freezer, and it will keep its strength for months. Instant vs active dry vs fresh yeast explains how each type should be handled.
Was the liquid too hot?
Yeast is a living organism, and hot water hurts it. Active dry yeast is happiest dissolved in water around 40 to 45 °C (105 to 115 °F). Much above about 50 °C (120 °F) it starts to suffer, and at around 60 °C (140 °F) it dies. Water from a recently boiled kettle, or milk warmed in the microwave and not checked, can easily be that hot.
If the liquid felt hot rather than warm to your wrist, that may be your answer. A cheap probe thermometer stops it happening again.
Is the dough too cold?
Yeast slows down sharply as it cools. A dough at 20 °C can take twice as long to rise as one at 26 °C, and a dough sitting in a cold kitchen in winter can look completely still for an hour.
The fix starts at mixing, with water warm enough to bring the whole dough up to temperature. The dough water temperature calculator does the sum. For a yeasted dough mixed by hand, with the kitchen and flour both at 18 °C and a target dough temperature of 25 °C, it asks for water at 37 °C: comfortably warm, and well inside the safe range. Why dough temperature matters more than time explains why hitting the target makes such a difference.
After mixing, put the dough somewhere around 24 to 28 °C. An oven with only the light on, or a spot near a radiator but not on it, both work.
Is there enough yeast, and the right kind?
The three common types aren’t equally strong, and swapping them gram for gram is one of the most frequent mistakes. Fresh yeast is the weakest by weight, active dry is about 2½ times stronger, and instant is about 3 times stronger.
The yeast converter makes the swap exact:
- A recipe asking for one packet of active dry yeast, 7 g or 2¼ teaspoons, needs 5.83 g of instant (about 1⅞ teaspoons) or 17.5 g of fresh.
- A European recipe asking for 20 g of fresh yeast needs 8 g of active dry (about 2⅝ teaspoons) or 6.67 g of instant (about 2⅛ teaspoons).
Using 7 g of fresh yeast where a recipe meant 7 g of instant gives the dough only a third of the yeast it needs. It will rise eventually, but very slowly. The opposite mistake, three times too much, gives a dough that races up, smells boozy and collapses.
Measuring by spoon adds its own error, especially with very small amounts. Weighing yeast on a scale that reads to 0.1 g is the most reliable way. Why bakers weigh ingredients instead of using cups shows how far spoon measures can drift.
Is something in the dough slowing it down?
- Sugar. Above about 10% of the flour weight, sugar draws water away from the yeast and slows it noticeably. Sweet doughs often need more yeast, or a special yeast made for sugary doughs.
- Salt. Normal amounts are fine. Doubling it by mistake, say a tablespoon instead of a teaspoon, slows the rise a great deal.
- Cinnamon. Large amounts kneaded into the dough itself slow yeast down, which is why most recipes put it in a filling.
- Very stiff dough. Too much flour makes a tight dough that can barely expand. Cup measures that pack in extra flour are a common cause.
- Heavy whole grain or rye. These doughs rise less and more slowly. That’s normal, not a fault.
Did it already rise and fall?
A dough left too long in a warm place can double, run out of steam and sink again before you check it. Signs include a wrinkled or deflated top, large collapsed bubbles, a strong alcoholic smell and dough clinging to the bowl well above its current level.
That dough isn’t ruined. Press it down gently, reshape it, and give it a shorter second rise in a cooler spot.
Wide, shallow bowls also make a rise hard to judge, because the dough spreads out instead of up. A straight-sided container shows the real picture.
Rescuing a dough that won’t move
- Move it somewhere warm, around 26 to 28 °C, and give it another 30 to 60 minutes.
- If there is still no sign of life, test a little of the same yeast as described above.
- If the yeast is dead, dissolve fresh yeast, about half the original amount, in a couple of tablespoons of warm water and knead it into the dough with a spoonful of flour.
- Let it rise again, then shape and continue as normal.
If that fails too, roll the dough thin and bake it as flatbread or crackers. Nothing is wasted.
Yeast mistakes to avoid
- Guessing the water temperature. “Warm” from a kettle is often far too hot.
- Swapping yeast types gram for gram. Fresh, active dry and instant differ in strength.
- Keeping opened yeast in a warm cupboard. It fades much faster than in the fridge.
- Judging the rise by the clock. Recipe times assume a warm kitchen.
- Adding flour when the dough feels sticky. A stiffer dough rises less.
Yeast bread questions
Does salt kill yeast?
Not in normal bread quantities. Salt slows yeast a little, which helps flavour and structure. Leaving yeast sitting in strong salt water for a long time can harm it, so it’s sensible to mix them into the flour separately, but stirring them in together for a minute does no harm.
How long should a first rise take?
Most standard yeast recipes rise in about 1 to 2 hours at 24 to 27 °C. Cooler kitchens, sweet doughs and recipes with very little yeast take longer, sometimes much longer. Look for a dough that has roughly doubled and keeps a dent when pressed gently.
Why did my bread rise in the bowl but not in the oven?
The dough probably overproofed during the final rise, using up its strength before baking. Shape it a little earlier next time, and bake as soon as it has risen by about three quarters and springs back slowly when poked.