Set the baseline while you can still identify it
Choose a clean, clear container with straight sides and enough room for the sample to expand. Use a small portion big enough to measure with your ruler or the jar’s marks. Press it gently into the bottom to remove obvious voids, level the surface enough to read it and cover it loosely. Mark the top of the sample and note the time.
Follow your recipe if it starts bulk at starter addition. A sample taken after several folds measures the change from that later point. Write down that difference before you try to compare the jar with a chart that starts at mixing. If you consistently use the same later baseline, you can compare your own bakes that use it. [2]
Read the jar and the main dough together
- Keep the sample beside the main dough, away from a heat source or draft that only reaches one of them.
- At each check, read the level from the same angle. Measure the height from the bottom, using the same units as your starting height.
- Record what the full batch is doing. Look for visible expansion, bubbles and how the dough feels in the container. Check its temperature at the centre if you can.
- Use the recipe’s readiness cues when the two readings differ. A sample can be informative without behaving exactly like the dough you will shape.
If the sample starts at 20 mm and rises to 30 mm in a straight-sided jar, its measured rise is (30 − 20) ÷ 20 × 100, or 50%. If the starting surface is uneven, record a range or level the starting sample more carefully next time. The sample height is an estimate of its volume change.
Why your sample can disagree with the full dough
A little jar changes temperature faster than a large batch. If you move warm dough into a cold kitchen, the small sample may cool first. If you put everything in a warmer area, the sample may warm first. The sample also sits undisturbed while you fold the main batch. Keeping the two together reduces one source of disagreement and gives you something useful to compare. [3] [2]
| Illustrative check | Aliquot sample | Main dough | What to do next |
|---|---|---|---|
| Start | 20 mm at the chosen baseline | Baseline marked at mixing | Note the time and keep the vessels together. |
| Later check | 30 mm, a 50% rise | Less expansion than you expect, still feels tight | Compare temperature and check the main dough again before shaping. |
| Next check | Sample has moved further | Full dough shows the recipe’s expected expansion and feel | Use the full dough’s signs and record the sample as a comparison. |
These example readings show how to think through a disagreement. Use the sample’s movement and the full dough’s condition together. If the jar keeps leading your full batch, note the difference at several checks before you change your shaping decision. If your recipe uses a straight-sided main container and you can see the full batch clearly, its own measured rise may be the more direct observation.
Crispy Crust’s planned bake log would let you keep the aliquot reading beside the main dough temperature and a photo from the same check. That makes it easier to see whether the little jar tended to lead or lag across similar bakes.
Use the dough rise calculator to convert your own starting measurement and recipe target into a mark.