Colruyt Group is not a brand of Belgian beer, but rather a retail company based in Halle, Flanders, Belgium. It is one of the largest retail chains in the country, operating various supermarket brands including Colruyt, OKay, Bio-Planet, and Spar. The company was founded in 1928 by Franz Colruyt and initially started as a wholesale business. Over the years, Colruyt Group has expanded its operations and now has a significant presence in Belgium and neighboring countries. While they do not produce their own beer, they do offer a wide range of Belgian beers in their supermarkets, including popular brands such as Duvel, Leffe, and Chimay.