Smart Cuisine Lids New Smart Cuisine Lids, the perfect multifunctional solution for your kitchen: cook, serve and store. Made from culinary opal, the range comprises oven dishes available in two shapes: rectangular and oval. These elegant baking dishes with lids go from heating and baking to serving and storage with ease. They’re shatterproof, dishwasher-safe and stackable, so you can organise your kitchen without taking up too much space.