For a luxurious gratin that includes both potatoes and leeks, we make sure to slice them to specific widths to ensure even cooking. Thyme and white wine bring a bit of brightness to an otherwise rich dish. Tap the link in our profile to sign up for a free trial and access the recipe. #cookscountry #gratin #potatoes #leeks #sidedish #comfortfood #cheesy #creamy #gruyere #recipe