Chalav Yisrael is milk or milk products for which the milking was supervised by a religious Jew. Chalav Yisrael applies to milk, cream, and milk solids/dried milk. The only milk derivatives that are not subject to restrictions of chalav Yisrael are whey and cheese. But they must still be kosher.

Note Cooking kosher, non-chalav Yisrael dairy foods does not render the utensil non-kosher, even for someone who only eats chalav Yisrael.