The Best San Francisco Coffee for Foggy Mornings | Karl The Fog Coffee San Francisco runs on two things: a wall of marine layer and a dark roast. Explore The Fog Never Run Out of the Mist SUBSCRIPTION Find Your Perfect Pour COFFEE MATCHMAKER THE FOG: Our Signature “White-Out” Roast THE FAN FAVORITE Artisanal Roasting We take pride in our small-batch roasting process. Unique Flavor Profile Expertly crafted to reflect the bold, dynamic spirit of San Francisco. Ethically Sourced Beans We partner directly with farmers to ensure fair wages and safe working conditions.