How to Feed a Sourdough Starter Without a Scale

No kitchen scale? You can still keep a sourdough starter happy using measuring cups, tablespoons, and a few simple visual cues. The key is using more flour than water by volume and watching how your starter responds.

This guide is for maintaining an established wheat-based sourdough starter. If you are reviving a dried starter or caring for a gluten-free starter, follow its specific instructions first.

A simple no-scale feeding recipe

For a small, manageable feeding, use:

  • 2 tablespoons of stirred-down sourdough starter
  • 1/4 cup of flour, spooned into the cup and leveled
  • 2 tablespoons of room-temperature water, plus a little more only if needed

Unbleached all-purpose flour or bread flour is a straightforward choice. Aim for a thick, stirrable paste, not a thin, pourable batter. Flour absorbs water differently, so texture is a useful guide.

How to feed your starter, step by step

  1. Stir and measure your starter. Stir it down before measuring so large air pockets do not fill your spoon. Keep 2 tablespoons in a clean jar and remove the rest.
  2. Add the water. Stir in 2 tablespoons of room-temperature water to loosen the starter.
  3. Add the flour. Spoon flour lightly into a 1/4-cup measure, level it off, and stir it into the jar. Scrape down the sides so you can see the rise clearly.
  4. Check the consistency. The mixture should be thick but easy to stir. If dry flour remains and the mixture is too stiff to combine, add water a teaspoon at a time.
  5. Mark the starting level. Use a rubber band or a washable marker on the outside of the jar. Leave plenty of room for the starter to expand, and cover with a lid that is not tightened airtight.
  6. Watch the rise. Leave it at a comfortable room temperature, away from direct heat. Look for bubbles, expansion, and a pleasantly tangy or yeasty smell.

Not sure what to do with the portion you remove? Read what sourdough discard is and how to use it. Save discard for cooking only from a healthy, established starter.

Why not use equal cups of flour and water?

Water weighs much more than flour in the same measuring cup. A 1:1:1 feeding ratio means equal weights of starter, flour, and water, not equal volumes. Equal cups of flour and water can make your starter much wetter than intended.

The recipe above is a practical volume-based feeding, not an exact weight-ratio conversion. Measuring flour consistently and paying attention to texture will help you get repeatable results.

If you later switch to a scale, our step-by-step sourdough starter feeding guide explains a feeding measured by weight.

When should you feed it again?

For a starter kept at room temperature, check it about every 12 hours at first. Feed as its rise levels off and it begins to fall, then adjust your routine to its pattern. A warm kitchen speeds fermentation; a cool kitchen slows it down. Avoid repeatedly feeding a sluggish starter before it has shown activity, because that can dilute it.

A healthy, established starter kept in the refrigerator is often maintained with roughly weekly feedings. Before baking, give it room-temperature feedings until it rises reliably again.

For breaks between baking days, follow our sourdough starter storage guide.

How do you know it is ready to bake?

Look for a starter that rises predictably after feeding, has bubbles throughout, and reaches a rounded or just-leveling top before it starts to fall. Many established wheat starters roughly double, but timing and rise vary with flour, temperature, and starter condition. Use its behavior rather than a fixed number of hours.

Once it is reliably active, explore ways to use sourdough starter beyond bread. Feeding without a scale does not make every baking recipe suitable for volume measurements, so follow your chosen recipe's measurements.

Quick troubleshooting

  • Too runny immediately after feeding? Check that you used 1/4 cup flour and only 2 tablespoons water. Add a little flour if needed. A starter can also thin as it ferments.
  • Very little rise? Keep it in a moderately warm spot, mark the level, and allow time for activity. Consider whether it is cold from the refrigerator or still recovering. Our guide to why a sourdough starter is not rising explains what to check.
  • A strong acidic smell or liquid on top? It may be hungry. Review your feeding schedule and watch its rise-and-fall pattern. Read our mold vs. hooch guide to distinguish ordinary liquid separation from warning signs.
  • Fuzzy mold or pink or orange discoloration? Discard the entire starter, clean the container thoroughly, and start again. Do not try to rescue it by removing the affected surface.

Can you keep using this method?

Absolutely. Use the same measuring tools, spoon and level your flour, and stir down your starter before measuring. A scale offers greater precision, especially for baking recipes, but you do not need one to build a consistent starter-care routine.

Need more help? Read our starter feeding troubleshooting guide or learn more about feeding ratios.