As Radius readies its sit-down restaurant, the casual café is open and buzzing. The shtick: Ingredients (well, most of them) sourced within a 100-mile radius. That's not as hard in San Francisco as it would be in Chicago, but it turns out proximity is pricey. Take the salad of duck confit with blue cheese and walnuts that might or might not be on today's menu: slick, dark-tasting lumps of meat, at the edge of a drift of cheese-and-nut-studded salad mix, plastic ramekin of red wine vinaigrette on the side. Will it be the most satisfying lunch dish you've ever spent $13 on? It will not. But what's there should be tasty, and you can take comfort knowing that it's $13 of something that tastes like this side of Lodi.
Radius Café 1123 Folsom (at Langton), 525-3676