Taking a walking tour of San Francisco's waterfront gives a chance to try some culinary gems. Parking near the Ferry Building is a great starting point. Downer Alert! The parking meters run every day in that area. You don't want to find a $50 ticket that wipes the smile off your face.
In the Ferry Building, start the breakfast noshing on tasty Frog Hollow Farm savory (ham & gruyere) and fruit (apple & quince) turnovers. Wash them down with a strong cappuccino, orange juice, or regular coffee. Walk along the Embarcadero to Pier 39. It's nice to read SF-centric quotes on the sidewalk on the way. At Pier 39, the real attraction isn't the food or shops, but noisy (and smelly), frisky sea lions.
The Boudin Bakery at the Wharf has wonderful bread making demonstrations, samples, and a market place boasting Peet's coffee and many other culinary delights. Watch bread baskets float above your head as the bakers turn out animal shaped bread that may be hokey but still fun. Tempting jams, mixes, utensils, books, are fun to browse.
Next, keep your hunger and exercise going by walking to the end of the pier at Ghiradelli Square. There are swimmers and fishermen to check out, along with stunning views of the Golden Gate Bridge, Alcatraz, and Marin.
Grab a cozy booth and get ready for serious crab at the quaint Sabella & La Torre restaurant. The family run restaurant has been around since 1927, and offers a view of sidewalk seafood stands. A half cracked crab runs almost thirteen dollars, and comes with a salad chock full of shrimp. Other items are affordable, and the menu is primarily seafood, salad, chowder, and sandwiches. Mix the crab with fresh and tangy sourdough bread dipped in drawn butter.