Measure

Starter peak

You might say: ripe starter, when the starter is ready

The point where a fed starter has risen highest, just before it falls, with bubbles throughout.

What it does
Marks a ripe starter ready for baking.
Ask
Has it risen well past its starting level, domed, and begun to flatten?
Trouble
Under-ripe starter has not doubled; over-ripe starter has doubled or tripled and then started to sink.

What to look for

  1. The starter domes at its highest mark
  2. Bubbles fill the jar before the surface starts to flatten

Sources

  1. King Arthur Baking, Ripe sourdough starter: Here's what that means, Ripe sourdough starter: Here's what that meansStarter that is under-ripe has not yet doubled in size, and starter that is over-ripe has doubled or tripled in size and then started to sink again. … It's doubled in volume, and shows signs of just beginning to sag under its own weight.
  2. King Arthur Baking, Feeding and Maintaining Your Sourdough Starter, Feeding and Maintaining Your Sourdough StarterIf you’re looking to bake with ripe starter, remove what you need for your recipe when it has roughly doubled in volume and become bubbly (about 6 to 8 hours), then feed the remaining starter.

Use it on your project

teardown-apply: hold "Starter peak" (starter-peak) from the teardown at https://teardownatlas.com/bread/ against my project

Paste it into a coding agent that has the teardown skills.

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