The coffee world has changed since Starbucks rose to prominence. Not

only has the sourcing of beans acquired wine-like precision, but now

there are many small, local roasters. How'd this all happen? Episode 4

brings you into the infrastructure underpinning third-wave coffee from

a Kenyan coffee auction to a major coffee importer to a secret coffee

warehouse in San Leandro with beans from every coffee-growing nation

in the world. We’re guided by Aaron Van der Groen, the green coffee

buyer for San Francisco’s legendary roaster Ritual Coffee.

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