One way for me to look for new recipes is exploring magazine articles like in Bon Appeptite magazine (of which I have had recipes published). I've been to Portland several years ago and it is a marvelous place with nice restaurants. The magazine had several restaurants in the article and notes some interested dishes and more. When I go back I will have to hunt these down.
Belgian pomme frites in paper cone with dipping sauces ( rosemary truffle ketchgup and tarragon anchovy mayo
Mexican and veg dishes
pita with beef and more with special condiment ajvar relish (tomatoes, eggplant, garlic, paprika ) and great meatballs (cufte) with garlicky white sauce.