Leftover Prime Rib Beef Stroganoff

olive oil ((extra virgin))

shallot ((minced))

garlic ((minced))

butter

all-purpose flour

tarragon

ground sage

thyme

each, salt & pepper ((more to taste, if necessary))

Baby Portabella Mushrooms ((stemmed, sliced))

beef broth

Worcestershire sauce

Dijon Mustard ((coarse ground))

leftover prime rib roast ((sliced into 2 inch strips))

sour cream

egg noodles ((rinsed and drained))

parsley ((chopped, optional garnish))