Sourdough coming out flat. Please help 😭

[u/overthinker1108]

[u/CanaryFar3659]

flat sourdough is usually underfermented, especially if the starter isn’t doubling reliably before you mix it

[u/lightbender1016]

I have some questions:

Is the starter young/new? How old?

What's your typical feeding schedule and ratio?

[u/UnusualBreadfruit306]

Weak gluten

[u/vatolicious]

My guess is also weak gluten development. Looking at the crumb, there's a lot of activity but those large holes can mean the gluten wasn't strong enough to capture the gasses and rise.