In response to their call, a team of the region’s top chefs is assembling — Avengers-style — to save the day. Tickets start at $600 and are available for purchase via Tock , with 100% of the proceeds going to Tierra Vegetables. “So many chefs in San Francisco consider Tierra an essential part of the fabric of Bay Area dining. Wayne James and his sister Lee have been farming in Santa Rosa for more than 20 years. “It would be sort of a disaster for us and the county if we fail to close this deal,” Lee James said.