Also known as Bear Republic Jack London ESB
Commercial description
This ale is brewed in the traditional English style with English yeast, malts, and hops.
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Bear Republic Jack London ESB

The brewer markets this same or near-same product by more than one names. This can be the result of a brewer distributing this beer under different names in different countries, or the brewer simply changing the name, but not the recipe at different points in time.