Bierbrouwerij De Eem is a Dutch craft brewery based in Amersfoort, in the province of Utrecht. Founded in 2006 by Ruud van Moorst and Peter de (last name not confirmed in sources), the brewery added a second independent brewing voice to a city already home to the historic Brouwerij De Drie Ringen. The name is a direct reference to the river Eem, which flows through Amersfoort and has long been associated with the region's identity and heritage. The brewery's philosophy, as expressed by founder Ruud van Moorst, centres on the belief that consumers should understand and appreciate the diversity of beer styles. De Eem's portfolio includes a range of styles, with noted examples including a blond beer and an amber-coloured beer with fruity characteristics such as mango. Recipes developed by Van Moorst were at times brewed at partner facilities, including De Scheldebrouwerij in Meer, Belgium, reflecting a collaborative approach to production. De Eem has been referenced in academic research on the renewal of mature industries, with Van Moorst cited as an advocate for greater beer diversity and consumer education. The brewery is listed among Utrecht's craft brewing scene alongside names such as Brouwerij De Leckere and Brouwerij Maximus, underlining its place in the regional beer landscape.