M&S Collection Scottish Kiln Smoked Kippers & Butter Flaky Scottish kippers, smoked over Oakwood in wood burning kilns and complemented perfectly with melted butter. Simply grill or oven-bake. Two per pack. Welcome to Collection from M&S, where exceptional quality and intricate attention to detail makes for something truly special. Our M&S seafood products have been sourced from fisheries and fish farms in a way that minimises their ethical and environment impact, while guaranteeing you the highest quality, delicious seafood you’d expect from M&S.