Your Sourdough Starter Feeding Schedule Doesn't Have to Be Complicated

Let me guess. You started a sourdough starter, everything was going great for a few days, and then life happened. You forgot a feeding. Or two. Maybe three. And now you're staring at a jar of dark, hooch-covered goo wondering if you've killed it.

You haven't. Sourdough starters are ridiculously resilient. I once forgot about a starter in the back of my fridge for six weeks. Six weeks. Fed it twice, and it was back to doubling in four hours like nothing happened. These things survived for thousands of years before alarm clocks existed. They'll survive your Tuesday.

The Two Modes: Counter vs. Fridge

The single most important thing to understand about feeding schedules is that temperature changes everything. Your starter is a living colony of wild yeast and bacteria, and like all living things, they eat faster when they're warm and slower when they're cold.

Counter mode (room temperature, 68-78F)

When your starter lives on the counter, the yeast and bacteria are active and hungry. They'll consume the flour you give them in roughly 8-12 hours at typical room temperature. This means you need to feed once or twice a day to keep them happy and prevent the starter from becoming too acidic.

Counter mode is great when you're baking frequently (multiple times a week) or when you're building up a new starter. The frequent feedings keep the yeast population strong and active.

Fridge mode (38-42F)

When you put your starter in the fridge, fermentation slows to a crawl. The yeast and bacteria are still alive, just barely moving. This means you only need to feed once a week. Some people stretch it to every two weeks. I've stretched it much longer than that and lived to tell the tale.

The Feeding Ratio: What Actually Matters

You'll see all sorts of ratios thrown around online. 1:1:1, 1:5:5, 1:10:10. These numbers represent the ratio of starter to flour to water by weight. Let me break down what they actually mean and when to use each.

1:1:1 (equal parts)

This is the most common recommendation for daily maintenance. Take 50g of starter, add 50g of flour, add 50g of water. Simple. The starter will peak (reach maximum rise) in about 4-6 hours at room temperature. This is a good all-purpose ratio when you're baking regularly.

1:2:2 or 1:3:3 (moderate feed)

Take 25g of starter, add 50-75g of flour, add 50-75g of water. More food means longer time to peak, which means less urgent feeding schedule. A 1:3:3 ratio might take 8-10 hours to peak at room temperature, which conveniently lines up with an overnight or workday schedule.

1:5:5 or higher (big feed)

Used for building a levain for baking, or when you want to slow things down. A 1:5:5 ratio can take 12+ hours to peak, which is perfect for an overnight levain build. This is also useful in summer when your kitchen is hot and fermentation moves too fast.

How to Tell When Your Starter Is Ready

Forget the clock. Your starter doesn't care what time it is. What matters is what it looks like and how it behaves. Here are the signs that your starter is at peak activity and ready to use for baking:

• It has doubled (or more) in volume. Put a rubber band around the jar at the level after feeding. When it's doubled, it's ready or very close
• The surface is domed and bubbly. You should see lots of small and medium bubbles across the top and along the sides of the jar
• It smells pleasant. A healthy, active starter smells yeasty, slightly tangy, and almost fruity. Not like nail polish remover, not like gym socks
• The float test works. Drop a spoonful into a glass of water. If it floats, your starter has enough gas production to leaven bread. If it sinks, it needs more time or another feeding

Reviving a Neglected Starter

Maybe you went on vacation. Maybe you just forgot. Whatever happened, your starter has been sitting in the fridge for way too long and looks questionable. Here's how to bring it back:

1. Don't panic. The dark liquid on top is hooch (alcohol). It's a sign the starter is hungry, not dead. Pour it off or stir it in
2. Discard most of it. Keep just a tablespoon (about 15-20g) of the starter
3. Feed generously. Add 50g flour and 50g water. Mix well
4. Leave on the counter. Let it sit at room temperature
5. Feed again in 12 hours. Discard down to a tablespoon, feed 50g/50g again
6. Repeat for 2-3 days. By the second or third day of twice-daily feedings, you should see reliable doubling within 4-6 hours

If after 4-5 days of consistent feeding you're not seeing any activity at all, the starter might genuinely be dead. But this is rare. I've revived starters that looked truly horrifying.

Flour Matters More Than You Think

The type of flour you feed your starter affects its behavior significantly. Here's a quick breakdown:

• All-purpose white flour: The standard. Predictable, easy to manage, mild flavor. Great for beginners and for maintaining a stable starter
• Bread flour: Higher protein means slightly more food for the yeast. Works just as well as AP flour, sometimes better
• Whole wheat flour: Ferments faster because the bran and germ provide extra nutrients and wild yeast. A starter fed with whole wheat will be more vigorous but also more acidic and harder to time
• Rye flour: The turbocharger. Rye ferments incredibly fast and is loaded with nutrients that yeast love. If your starter is sluggish, switch to rye for a few feedings and watch it explode with activity

You can absolutely mix flours. My maintenance feed is 50/50 all-purpose and whole wheat. When I want to give my starter a boost, I throw in some rye. There's no single right answer here.

Water Temperature: The Secret Timing Tool

Want your starter to peak faster? Use warm water (85-90F) for feeding. Want to slow it down? Use cold water straight from the fridge. This is the simplest way to adjust your timing without changing the feeding ratio.

In summer, when my kitchen hits 80F, I feed with cold water and use a higher ratio (1:4:4 or 1:5:5) to prevent the starter from over-fermenting before I can use it. In winter, I use warm water and a lower ratio (1:2:2) to speed things up. Once you understand these two levers, temperature and ratio, you can make any schedule work.