Anna Kollar, 10, center, from south St. Louis County, takes a bite of her free chocolate sample while touring the Bissinger’s ...

Hershey and other chocolate makers are continuing to hike prices, saying a volatile cocoa market gives them no choice.

Stay Sweet SF’s wondrous treats enter the fray from San Francisco-born-and-raised pastry chef Mark Lieuw. He worked at little-known Atelier Crenn and Eleven Madison Park.