It has been two years since Good Food launched Sandwich Watch, a column chronicling Sydney’s love affair with things-between-bread. It’s covered everything from Indonesian toasties at Ada’s Affair, to lobster rolls at Afishonado, yet there’s appetite for more. Harvey’s Hot Sandwiches is due to open on Pitt Street with a $3.5 million fit-out in November, demonstrating just how big the sandwich business has become.