Call River’s End and find out, but the lunch menu is shorter (still sounds good, to me) than the dinner. I sincerely doubt they offer the tasting menu at lunch, very few restaurants do.
http://ilovesunsets.com/Menu.html
River’s End Restaurant & Inn
11048 Highway 1
Jenner, CA 95450
Tel: (707) 865-2484
Wherever you pick, I wouldn’t suggest bothering with Coast Kitchen @Timber Cove Inn. Beautiful site and decor, but very uneven in food and service quality.