Perhaps not necessarily the best, but the most memorable:
As a teenager, a high school lover and I were in San Fransisco on Fisherman's Wharf. We bought a wheel of warm, freshly baked, pre-scored sourdough bread and a pound of freshly steamed prawns in a paper bag from a street vendor. A bite of sour dough followed by a bite of prawn while watching the Sea Lions play, smelling the salt air, having to stay close in order to keep the wind and chill away, and being very much in love was absolutely wonderful!