Very Active San Francisco Sourdough Starter--or Sponge
Fully Activated San Francisco Sourdough Starter, ready
to put into the fridge as your "stash."
Do you see how it looks sort of quilted on top? Some
of the bubbles are small, but it's just teeming with activity. This
is how your sponge should look when you're ready to use it to make your
dough. If
you watch it for several seconds, you will actually be able to see some
of the bubbles on top burst.
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