A Community Supported Agriculture, or CSA, allows locavores to snap up shares in all manner of produce, meats, cheeses, and more local harvest bounty. including wine. Here's how it works: thirsty supporters sign up, committing to purchase a share of the product when it becomes available. The benefit is clear for small-scale vintners—they are guaranteed a market for the product when it becomes available. And for the buyer, the benefit is the opportunity to support local producers and secure a limited-edition wine that may be available for retail purchase only in very limited supply. More