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A portrait of SweetWater Brewing Co. 420 beer on Wednesday, Feb. 18, 2015, in Houston. ( J. Patric Schneider / For the Chronicle )

A portrait of SweetWater Brewing Co. 420 beer on Wednesday, Feb. 18, 2015, in Houston. ( J. Patric Schneider / For the Chronicle )

Cannabis Editor |? | San Francisco Chronicle. Award-winning journalist. Best-selling author.