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Yitzchok Kosofsky, 89, the CPA Behind Kosher Milk for Chicago

As thousands of Jewish families in the Midwest enjoyed fresh, chalav Yisrael milk over Passover, few knew that their dairy drink was due to the efforts of a humble CPA named Yitzchok Eliyahu (Irwin) Kosofsky, who passed away just prior to Passover at the age of 89 years old.