Montgomery cheddar, poilâne sourdough bread, and a sprinkle of onions and leeks makes for a tasty toastie (grilled cheese sandwich to Americans).
If you can find a quiet day, or are prepared to battle through hordes of tourists, you’ll find this in Borough Market – just follow the smell of cheese!
According to The Atlantic:
I took one big bite and the sandwich immediately went onto my list of best things I’ve ever had.
A Life In London 
That, looks like a fantastic sandwich.
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Add to your list for the next time you’re in London!
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My whole mouth just filled with saliva. Must give these a try.
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Go early, they have a long queue!
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that looks like a good sandwich! nice photo.
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