Whether you identify yourself as a bit of a foodie, a healthy eating guru or suspicious of anything pre-packaged, if you also live in the real world you will have a favourite go to shop-bought sandwich! It is convenient, quick and let’s face it, it is cheap. Realistically you are not going to have a home made packed lunch every day. Maybe you didn’t actually make it to the supermarket recently, been away for a weekend or with work or just had no time. The humble sandwich is easy, you can eat it at your desk…