Ninety-three percent of Northern California’s vineyard acreage consists of just eight grape varietals. The other 7 percent get the spotlight this weekend during the fifth annual Seven % Solution event. Hosted by eclectic wine retailer Bergamot Alley and featuring farmers and winemakers from around the country who specialize in these fringe varietals, the weekend of diverse wine starts with winemaker dinners at several local restaurants on Friday, July 21, before the daylong seminar event on Saturday, July 22, at Front Porch Farm, 2550 Rio Lindo Ave., Healdsburg. 1pm. $65. bergamotalley.com.