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Shares of Boston Beer Co. were up sharply Tuesday. The maker of Samuel Adams, Angry Orchard, Twisted Tea, and other brands this week rolled out a new spring beer, Samuel Adams Cold Snap. The stock has been on an upward trend; a year ago, it was at about $135. Third-quarter results were impressive, The Motley Fool notes: a 29 percent growth in shipments from a year earlier, revenue that was up 30 percent to $216.4 million, and earnings that rose 23.5 percent to $1.89 per share, beating analyst estimates.