Here is the one place I recommend when driving between Portland and Seattle. Please recommend others along the route (but not within Seattle or Portland metropolitan areas)
LA TARASCA: Wonderful small Mexican restaurant in Centralia. Very friendly owners/servers. Excellent authentic Mexican food. Inexpensive. Not sure what to get? - challenge the owners to fix you a sampler meal of their favorites. 360-736-7756. 1001 West main. Exit 82. Go east on Harrison. Curve with road (Vearing right on first road fork, staying on Harrison, vearing left on second fork and road name changes to Main.) See exxon on left side and shortly thereafter restaurant is on the left. Total 2 - 3 minutes drive from fwy. Closed Tuesdays.