Also known as JosephsBrau Winterfest (WinterBrew)
Commercial description
Trader Joe’s Winterfest is a rich, dark bock, inspired by the beers Bavarian monks brewed to lift their spirits during the long fasts of Lent. Dark Roasted Munich and caramel malts worked wonders for hungry monks. Our Winterfest is sure to do the same for you.
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JosephsBrau Winterfest (WinterBrew)

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.