French Laundry is a trip of its own. You'll spend at least 3 hours there (I was there over 4) and ideally you don't want to have spent the day wine tasting.
I can't speak for breakfast, but for lunch I typically grab some nice cheese, bread and pate on the way up and have a picnic somewhere, or get a sandwich at Dean & Deluca or the Soda Canyon Deli.
For dinner recommendations, head over to Wino Depot and page pyang. He knows where's good right now and where isn't.