Why Isn't My Bread Dough Rising

You mixed and kneaded, covered the bowl and waited, and the dough looks exactly as it did an hour ago. Before you throw it out, know that most stalled dough can be saved. Yeast is a living organism that needs moisture, food and the right temperature. When a dough refuses to rise, something is wrong with the yeast itself or with the conditions around it.

The main causes are yeast that is dead or past its prime, liquid that was too hot, a kitchen that is too cold, and very rich or sweet dough that slows the yeast down. This guide shows you how to tell which problem you have, how to rescue the dough, and how to prevent it next time.

First check: is it cold or is the yeast dead?

Look closely at the dough. If there are small bubbles on the surface or along the sides of the bowl, or it has grown even slightly, the yeast is alive and just slow. Warmth and patience will likely solve it. If the dough is completely unchanged after 90 minutes in a reasonably warm room, the yeast may be inactive.

Smell can help as well. Fermenting dough has a faint, pleasant yeasty or beery aroma. Dough with dead yeast smells only of flour and water.

Temperature: the most common cause

Yeast slows dramatically in the cold. Dough at 18°C (65°F) may take twice as long to rise as dough at 24 to 27°C (75 to 80°F). A cold kitchen, cold flour or cold water can keep dough sluggish for hours. Recipes that give a rising time usually assume a warm room.

Move the dough somewhere warmer. Good options are an oven turned off with only the light on, a microwave with a mug of just-boiled water beside the bowl, or the top of a refrigerator. Aim for about 24 to 27°C (75 to 80°F). Avoid placing the bowl directly on a heater or in a hot oven, which can kill the yeast.

• Check the spot with a thermometer; an oven with the light on can get warmer than expected
• Use slightly warmer water in winter and cooler water in summer
• Cover the bowl so the surface does not dry out and form a skin

Yeast that is old or was damaged

Yeast loses strength over time, faster once the package has been opened. Store opened yeast in an airtight container in the refrigerator or freezer, and check the date. Liquid that is too hot can also kill yeast; temperatures above roughly 50°C (120°F) start to damage it, and around 60°C (140°F) it dies.

To test active dry yeast, stir about 1 teaspoon of sugar into 120 ml (½ cup) of water at 38 to 43°C (100 to 110°F), sprinkle the yeast on top and wait 10 minutes. It should be foamy and smell yeasty. Instant yeast can be tested the same way, though it is usually mixed directly with the flour.

Sugar, fat and salt

Small amounts of sugar feed yeast, but large amounts draw water away from it and slow fermentation. Rich doughs such as brioche, panettone and sweet rolls are naturally slow risers and often call for more yeast or a special osmotolerant yeast designed for sweet doughs.

Fat coats the flour and slows gluten development and rise. Salt is necessary for flavor and gluten strength but slows yeast in larger amounts. If a dough contains a lot of sugar, butter or eggs, expect a longer rise and do not assume the yeast has failed.

How to rescue dough that will not rise

If the yeast is alive but slow, warmth and time are all you need. Give the dough another hour or two in a warm spot and check it again.

If the yeast seems dead, dissolve 1 teaspoon of fresh active dry or instant yeast in 2 to 3 tablespoons of warm water, about 38°C (100°F), with a pinch of sugar. Let it foam if using active dry, then knead it thoroughly into the dough, adding a spoonful of flour if it becomes too sticky. Let the dough rise again in a warm place. The bread may taste slightly different but is usually good.

• Add a little extra flour only if needed; the dough should stay soft
• Knead for several minutes so the new yeast is spread evenly
• If there is no fresh yeast, roll the dough thin and cook it as flatbread in a hot pan

Whole grain, gluten-free and other slow doughs

Whole wheat, rye and other whole grain flours make heavier dough that rises less dramatically. They may never double in the way white dough does. Look for a puffy, airy look and the poke test rather than a specific size.

Gluten-free doughs and batters often rise very little, because there is no gluten to hold gas. They usually rely on psyllium, xanthan gum or eggs for structure. Expect a smaller rise and judge them by the recipe's visual cues.

Common questions

Can I let dough rise overnight in the fridge if it is slow?

Yes. A cold, slow rise develops flavor. Cover the dough well and let it rise in the refrigerator for 8 to 16 hours. Bring it out an hour or two before shaping so it can warm up.

Can I use dough that did not rise at all?

If the yeast is dead and you do not have more, you can roll it into flatbreads or crackers. Do not taste raw dough to check it; raw flour can carry harmful bacteria and should be cooked first.

Does instant yeast need to be proofed?

No. Instant yeast can be mixed straight into the flour. You can still proof it if you are unsure whether it is alive.