Starter Feeding Ratios Explained

Most starter advice tells you to feed 1:1:1 — equal parts starter, flour, and water. It's a fine default, but it's not always the right answer.

What the ratio means

A feeding ratio is starter : flour : water by weight.

• 1:1:1 — 50g starter + 50g flour + 50g water
• 1:2:2 — 50g starter + 100g flour + 100g water
• 1:5:5 — 50g starter + 250g flour + 250g water
• 1:10:10 — 50g starter + 500g flour + 500g water

The bigger the ratio, the more food per unit of starter, and the longer it takes the starter to consume that food.

Time to peak

Approximate times for a healthy starter at room temperature (75°F) to reach peak after each ratio:

• 1:1:1 — 4–6 hours
• 1:2:2 — 6–8 hours
• 1:5:5 — 10–12 hours
• 1:10:10 — 14–16 hours

Cooler temperatures extend these. Warmer shortens them.

When to use each ratio

1:1:1 — Daily baker

You bake regularly and want your starter ready quickly. Feed in the morning, bake by afternoon. Ratio that works for fast turnover.

Downside — needs feeding every 6–8 hours to stay at peak. Not ideal for people who can't be home.

1:2:2 — Standard maintenance

The most common ratio for active starters on the counter. Feed every 12 hours. Reliable peak in 6–8 hours.

This is the default I recommend.

1:5:5 — Twice-daily but flexible

If you feed once in the morning (8 AM) and once at night (8 PM), 1:5:5 works perfectly. Peak around 6 PM (perfect for evening dough mixing).

1:10:10 — Once-daily feeding

If you can only feed once a day, 1:10:10 stretches the food supply enough that the starter doesn't completely deplete. Peak around 12–16 hours after feeding.

Use for: traveling, busy weeks, or starter you want to use at peak in the evening.

1:50:50 — Long-haul (rare)

Used by some bakery cultures that need 24+ hours between feedings. Risky at home — too much variation in conditions.

Choosing for a specific bake

If you want to use your starter at peak at a specific time, work backward.

Example — you want to mix dough at 9 AM tomorrow.

Peak time for 1:5:5 starter at 75°F is ~10 hours.

Feed at 11 PM the night before. Peak around 9 AM. Use immediately.

If your kitchen is cooler (70°F), feed earlier (~9 PM) to compensate.

Hydration variations

You can also adjust the water:

• 1:1:1 (100% hydration) — standard
• 1:1:0.8 (80% hydration) — stiffer, more acetic acid
• 1:1:1.2 (120% hydration) — more liquid, more lactic acid

Stiff starters (lower hydration) develop sharper, tangier flavor. Liquid starters develop milder, more lactic flavor.

Stiff starter math

A stiff starter (50% hydration) is the traditional Italian "lievito madre" approach.

Feed: 50g starter + 100g flour + 50g water → 200g stiff starter.

Peak time: 8–12 hours. Slower but more flavorful.

Practical decision framework

Pick your feeding ratio based on your schedule, not the recipe.

• I want to bake within 4–6 hours: 1:1:1
• I'll bake later today: 1:2:2 in the morning
• I'll bake tomorrow morning: 1:5:5 the night before
• I'll bake in two days: 1:10:10, refrigerate

Common mistakes

• Always feeding 1:1:1 — works, but wasteful and inflexible
• Not adjusting for temperature — fast in summer, slow in winter
• Not letting peak happen — using starter too early
• Not catching peak — using starter too late (collapsing or sour)

Catching peak

Mark the level after feeding with a rubber band. Watch for the highest point.

When the starter starts to deflate, you've passed peak. Use within an hour of peak for best results.

A glass jar with straight sides (not narrowed at the top) makes this easier to see.

Discard math

Big feeding ratios produce more starter, hence more discard. If you find yourself with too much discard:

• Reduce starter quantity (use 25g instead of 50g)
• Smaller jar
• Bake more often
• Use discard for pancakes, crackers, etc.

Conclusion

The right ratio is the one that has your starter at peak when you need it. Math, not magic.