When Dr. Hartog Elion, a student of Louis Pasteur, came up with a special ‘A’ yeast strain in 1886, the quality and consistency of Heineken Beer was guaranteed. Since then, the first bottom fermentation style beer has been the foundation of its taste. With more than 5 million bottles brewed daily, Holland’s most well-known premium pilsner is sold in more than 170 countries around the world.