ok.
.
Get Nature Bake Spelt bread -best 'available' spelt bread on earth (no wheat gluten, lush and filling)
Get a Jar of Veganaise -dairy,egg,meat free mayo, and much tastier than regular mayo.
That is basically the base for the best sandwich on earth.
Those two key elements
From there the posisbilities are infinite. Several Favorites ^_~ :
Tuna
Thick juicy Red Tomato
Sliced Cucumber
Avocado
Those are my favorites. Food of the gods,...