Peel potatoes and rinse in cold water.
Grate potatoes into a large bowl on
smallest side of a box grater. Pour off all
water. Add eggs, remaining 1 tbsp oil, the
salt and pepper. Mix really well by hand,
breaking up yolks, until everything is
thoroughly combined and batter is
smooth. Pour into prepared dish and bake
at 400° until top is crispy and deep golden
brown and a toothpick comes out clean,
1 hour, 30 minutes to 1 hour, 40 minutes.