I use a home-made white loaf to make this. If you prefer, you can use an unsliced bought one — white sourdough is good. My friend Sue taught me how to make this. I think it’s fantastic — especially for a picnic.
Preheat the oven to 180°C (350°F/Gas 4) and line a baking tray with baking paper. Remove the crusts from the bread and cut it in half horizontally to give two layers (if your loaf is extra high, you can make three layers). Put the pieces on the tray.