I usually go for garlic croutons if I have leftover sourdough, but these cold summer nights of San Francisco left me wanting a bowl of soup recently. Yes, it's cold here in the summer. I'm missing the Chicago heat right about now. Come September I will be singing a different tune, I'm sure.
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<br />Adding the sourdough gave this soup a nice thickness and that trademark sourdough flavor.

Read the recipe on Food52.com