Spring is a time of uncertainty, at least when it comes to the weather. A glorious, sun-splashed day can be followed in less than 24 hours by sheets of rain, even sleet. Such is spring in the Green Mountains — and this year, its sunny side is elusive. What’s more certain is that Vermont’s brewers, distillers, viticulturists and cider makers stay busy during the winter months, and they’ve emerged with all kinds of new bottlings. To do justice to the season, here’s a drinking diagram with a glass of something new — or no more than six months old — to accompany each of spring’s multiple personalities.