Creamy fish gratin

Creamy fish gratin recipe serves 8fixings100g/4oz margarine175g/6oz leeks, generally slashed450ml/3⁄4pt fish stock300ml/10fl oz vermouth4 tablespoons Pernod350g/12oz monkfish filet, cut intoenormous pieces350g/12oz salmon filet, cut intoenormous pieces225g/8oz crude prawns, strippedfurthermore deveined225g/8oz crude scallops, divided175g/6oz onions, slashed100g/4oz plain flour150ml/5fl oz twofold cream450ml/3⁄4pt milk75g/3oz Parmesan cheddar, ground75g/3oz Gruyère cheddar, ground1 tablespoon Dijon mustard4 eggs, isolated15g/1⁄2oz coarse breadcrumbssalt and […]