Artisan cheese makers expect double-digit growth in the coming years.

Wortham cited the UC Cooperative Extension publication Coming of Age: The Status of North Bay Artisan Cheesemaking, written by UCCE community development advisor Ellie Rilla and published earlier this year. Of the 22 artisan cheese producers in Marin and Sonoma counties in 2010, 10 were dairy farms that use their own milk, the report says. Four more artisan cheese producers are in the process of starting up, even as four dairies in the two counties went out of business last year.

These 22 producers in total made almost eight million pounds of cheese last year, covering 95 varieties, which sold at retail for as much as $30 a pound, according to the report.

"We're where wine was 30 years ago," Rilla told the reporter. "It doesn't look like there's any chance of a bubble popping in the foreseeable future."