Salt is overrated, mushrooms are gross - until you frigging, fry them up properly..
Best sarnie I can think of (and I'm old school) - is a rye bread, toasted for less than 30 seconds. Good, mustard, not English, must be French (screw Brexit).....and salt beef....radish...
Or
Baguette, Mayo (lots of it) - sliced grilled chicken, lettuce, onions, chilli sauce. And I appreciate this is all about food, but what are you going to pair it with.....Champagne right? Obviously...both my sandwich options pair beautifully with beer / NOT CHAI / and some lovely Armand De Brignac Champagne - don't believe me read their mouth watering tasting notes here -
Link removed, please see the forum rules - STAnd yes I know Jay Z owns it - but it's still amazing!!!!
Massive foodie as you can tell

My wife tells me I need to get a gym membership. Got work, still didn't lose weight....because I didn't realise I had to go to the gym