DENVER - The Great American Beer Festival opened its doors Thursday evening at the Colorado Convention Center.
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About 600 breweries are participating, which means there are more than 2,800 different beers for participants to try.
Brewers came to Denver from all over the country, including Jim Koch - founder and brewer of the Boston Beer Company and Sam Adams beer.
Koch is a sixth-generation beer brewer, and he made the first batch of Sam Adams in his kitchen.
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