How to Feed Your Sourdough Starter (So It Stays Strong)

When I got my first starter going, I thought the hard part was over. Then I realized the real skill is feeding it the right way. Feeding is how you keep your starter happy, bubbly, and ready to bake.

In plain words: feeding means I remove some starter (usually), then add fresh flour and water. That gives the yeast new food. Then the starter grows and gets airy again.

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The goal of feeding (what I’m trying to make happen)

When I feed my starter, I want:

• Bubbles (sign of gas from yeast)
• Rise (it grows in size)
• Good smell (mild sour, yogurt-like, or yeasty)
• Predictable timing (so I can plan baking)

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Step-by-step: My basic feeding method (everyday version)

Step 1: Look at the starter

Do this:

1. Check the top: bubbles? liquid layer?
2. Smell it. Sour is normal. Rotten is not.
3. Notice texture: thick? runny?

Step 2: Stir it

Do this:

1. Stir to mix bubbles and liquid evenly.

Step 3: Discard most of it (unless you need more)

Do this:

1. Scoop out starter until you leave a small amount behind (I often keep a few spoonfuls).

Why I do this: If I keep all of it, I’d need a lot of flour every feeding.

Step 4: Add flour and water

Do this:

1. Add fresh flour.
2. Add fresh water.
3. Stir until smooth (like thick batter).
4. Scrape sides down.
5. Cover loosely.

Step 5: Let it rise

Do this:

1. Leave it at room temperature.
2. Watch it rise and then fall.
3. Use it when it’s at or near its “high point” if you want the strongest lift.

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A super-clear table: Feeding ratios (starter : water : flour)

Ratios sound like math, but it’s really just “how much starter compared to food.”

Ratio (Starter:Water:Flour)	What it means	When I use it
1:1:1	Equal parts starter, water, flour	Daily feeding in a warm kitchen
1:2:2	Double the food	When starter seems hungry fast
1:5:5	Much more food	To strengthen or slow down feeding time

If you want a deeper explanation of ratios and timing (and why different ratios change how fast it peaks),

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How often I feed (it depends where I store it)

Option A: I keep it on the counter (room temp)

• I usually feed once a day.
• If it’s very warm and it peaks fast, I may feed twice a day.

Option B: I keep it in the fridge (lower effort)

This is what I do when I’m not baking much:

• I store starter in the fridge.
• I feed it about once a week (or before I plan to bake).

A weekly fridge routine example is shown here (helpful if you want to see what “once a week” looks like):

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Step-by-step: Feeding from the fridge (my simple routine)

Step 1: Decide if I’m baking soon

• If yes: I “wake it up.”
• If no: I do a small maintenance feed.

Step 2: Wake it up (1–2 feeds before baking)

Do this:

1. Take jar out of fridge.
2. Stir it.
3. Discard most of it.
4. Feed it (I often use 1:1:1 or 1:2:2).
5. Leave it at room temperature until it rises.
6. Feed again if needed until it gets strong and predictable.

Step 3: Bake, then store again

After baking, I feed it, let it start bubbling a bit, then refrigerate.

If you prefer a “starter lives in the fridge” style and want tips for waking it up, this video is focused on that idea: How to wake up your Sourdough Starter from the fridge

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What I do with discard (so it doesn’t feel like waste)

Once my starter is stable, I save discard in a container in the fridge and use it in:

• pancakes
• waffles
• crackers
• flatbreads

(When a starter is brand-new, I’m more careful and usually toss discard for the first several days.)

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Troubleshooting: What the starter is “telling” me

1) My starter won’t rise much

What I try:

• Feed it more often for a few days
• Use a higher ratio (like 1:2:2 or 1:5:5)
• Keep it warmer

2) It gets watery and separates fast

That can mean it eats fast and needs more food. I use 1:2:2 or feed sooner.

3) It smells super sour (like strong vinegar)

It may be over-fermented and hungry. I discard more and feed at a higher ratio.

4) It has a gray liquid layer

Often hooch. I stir or pour off, then feed.

5) Mold or weird colors

If I see fuzzy mold or pink/orange colors, I throw it out and fully clean the jar.

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The “best time” to use starter (my easy rule)

If I want good rise in bread, I use starter when it’s:

• bubbly,
• airy,
• at its peak or close to peak.

A clear explanation of starter stages (rising, peaking, falling) is discussed in this teaching video: Understanding Sourdough Starter | feeding, ratios, leaven, when to use

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FAQ: How to Feed Your Sourdough Starter

1) Do I really have to discard every time?
Most of the time, yes, unless I’m building a bigger starter for baking. Discard keeps the jar small and the feedings affordable.

2) What ratio should I use as a beginner?
I start with 1:1:1 at room temperature. If it seems hungry quickly, I switch to 1:2:2.

3) Can I feed it straight from the fridge?
Yes, some people do. I usually stir, discard, feed, and then let it sit out until I see activity.

4) My starter is thick like dough—did I mess up?
Not necessarily. I add a little more water next feeding. I aim for thick batter, easy to stir.

5) My starter is runny—what now?
I add a little more flour next time. Also, some flours absorb water differently.

6) Do I have to use the same flour every time?
It helps for consistency, but it’s not required. I try not to switch constantly until I understand how my starter behaves.

7) How do I store it if I bake only sometimes?
I keep it in the fridge and feed about weekly or before baking. A weekly example: moon + magnolia weekly routine

8) Is it normal for it to smell sour?
Yes. Sourdough starter should smell sour/yeasty. If it smells rotten or shows mold, I toss it.

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Video resources (only where they’re most useful)

• Basic feeding/maintenance demo: How I Feed My Sourdough Starter
• Ratios and timing (more detailed): Use Feeding Ratios Instead
• Weekly fridge routine: Feed once a week straight from the fridge
• Understanding peak timing: Understanding Sourdough Starter
• Waking starter from fridge: How to wake up your starter