Step 1 / 6
prep
potato slices uniformly thin
Peel and slice the potatoes about 2 to 3 millimeters thick and do not rinse them. Their surface starch is useful: it thickens the dairy and helps the finished gratin hold together without flour.
Step 1 / 6
potato slices uniformly thin
Peel and slice the potatoes about 2 to 3 millimeters thick and do not rinse them. Their surface starch is useful: it thickens the dairy and helps the finished gratin hold together without flour.