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The good people at Bell’s Brewery have been releasing commemorative beers in their Batch series for about 20 years. At first, when their output was modest, they might make one to mark a 500-batch milestone, but in the mid-90s they dialed back to every 1,000 batches. This year they’re wrapping up the series on a nice round number: Batch 10,000. The recipe [PDF] calls for almost every malt or hop Bell’s has used since it started selling beer in 1985, a nod to the homebrewing days of founder Larry Bell—with his last beer of the season, he’d try to clear his shelves of everything he hadn’t run out of during the year. Batch 10,000 is made with 101 different malts and other fermentable grains—peated barley, flaked oats, red wheat, crystal rye—and 59 hop varieties, from novelties like Citra and Sorachi Ace to standbys like Chinook and Simcoe.