When I make a sandwich to eat fresh, I pretty much always toast the bread. When I pack a sandwich to eat later, however, I don't. I've always thought that eating cold toast would be gross. Recently though I'm starting to rethink this position. What would happen if I toasted bread, made a sandwich, and then ate it hours later?
If I did this, does it work better for certain kinds of bread, or certain sandwich fillings? Does it matter if the sandwich is stored in a chilled cooler, or in a room-temperature brown bag? In short, is it ever a good idea to toast a sandwich that won't be eaten until hours later, and if so, when?