Anyone can make a toasted sandwich or jaffle (i.e. a toasted sandwich with crimped, sealed edges). Slap together some bread, cheese and whatever else you like, and it's ready to go.
But as good as the average homemade toastie is, it's got nothing on the sangas at these spots. Leave the house and you'll be rewarded with fancy cheeses, handmade sourdough and even a mac'n'cheese filling.