Sourdough Basics

Sourdough Starter Not Rising? The Complete Troubleshooting Guide

You mixed flour and water, waited patiently, and… nothing. Or maybe your starter was active last week and now it looks flat and sad. Don’t panic — this happens to every sourdough baker. Here’s how to diagnose and fix the most common sourdough starter problems.

Problem 1: My starter isn’t rising at all

Likely cause: It’s too cold, or it’s too new. Wild yeast is temperature-sensitive — below 65°F (18°C) activity slows dramatically. If your starter is under 7 days old, it simply needs more time. Keep it somewhere warm (70–78°F is ideal) and be patient. A new starter can take 10–14 days before you see reliable activity.

Fix: Place it on top of your refrigerator, near a warm appliance, or inside your oven with just the light on. Use lukewarm water (85°F) when feeding instead of cold tap water.

Problem 2: There’s liquid on top of my starter

What it is: That grey or dark liquid is called “hooch” — it’s alcohol produced when your starter is hungry. It’s not harmful, just a sign your masa madre needs feeding.

Fix: Pour off the hooch (or stir it back in for a more sour flavor), then feed your starter with fresh flour and water. If this keeps happening, increase your feeding frequency — try twice a day instead of once.

Problem 3: My starter smells bad

Normal smells: Tangy, vinegary, slightly funky, like beer or yogurt — all normal. A healthy starter changes smell throughout the day depending on where it is in its cycle.

Bad smells: If it smells like nail polish remover (acetone), it’s very hungry — feed it immediately. If it smells like vomit or has pink/orange streaks, discard it and start fresh. That indicates contamination.

Problem 4: My starter is rising but my bread is still dense

Likely cause: You’re baking at the wrong time. Your starter needs to be used at peak activity — the moment when it has doubled in size and the dome on top is just starting to flatten. Too early or too late and you’ll get a dense loaf.

Fix: Do the float test — drop a small spoonful of starter into water. If it floats, it’s ready to bake with. If it sinks, give it more time.

Problem 5: I keep forgetting to feed my starter

Life gets busy. The good news: you can store your starter in the refrigerator and only feed it once a week. When you’re ready to bake, take it out the night before, feed it, leave it at room temperature overnight, and it will be ready to use in the morning.


Want a foolproof starter from day one?

The Pancito y Más Complete Sourdough Starter Kit includes a 50-page Sourdough Bootcamp guide with a full 7-day starter plan, feeding schedule, and troubleshooting section — so you always know exactly what to do next.

Still stuck? Drop your question in the comments or tag us on TikTok @pancitoymas — we answer every single one.

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