What you need:

4 oz.  Turkey pastrami Sliced
1 Tortilla Flour or spelt
2 t Yellow mustard add more or less depending on how strong of mustard flavor you like
2 T Sour cream
1/3 c Mozzarella or mild cheddar shredded (any mild cheese)
1/3 c Cherry tomatoes quartered
1/4  c grilled onion; optional (Fry in pan with butter till clear or tender crisp)
Buttering one side tortialla optional

What you do:

Mix mustard and sour cream together and spread on unbuttered side of tortilla
Sprinkle cheese on sour cream mix side
On one half the tortilla put the tomatoes and onion if using on
put the meat on the opposite side of onion
Fold and fry each buttered half until light brown

Helpful tips:

Best if served hot
To spice it up substitute pepper jack cheese!