Potato gratin

https://www.yummi.co.il/c/liora/d/%D7%93%D7%99%D7%9C_%D7%97%D7%9C%D7%91%D7%99_%D7%9E%D7%95%D7%A9%D7%9C%D7%9D_%D7%9C%D7%90%D7%99%D7%A8%D7%95%D7%97_%D7%A2%D7%9D_%D7%A7%D7%99%D7%A0%D7%95%D7%97_%D7%9E%D7%AA%D7%A0%D7%941?source=email