BeemsterÆs world famous milk becomes even more coveted during the first weeks of every spring. The milk given by the cows of the Beemster polder during the fist weeks of spring grazing, is the creamiest milk of the year. This is the milk used to create the special edition Beemster Graskaas. During this limited period, enough milk is collected to craft only 2,000 wheels of this unique cheese. Graskaas is made in the beginning of April by master cheese makers utilizing techniques dating back to 1901, and then aged for one month before its debut at the Spring Cheese Festival.