Desserts are not Silicon Valley’s strong suit. Mediocre crème brûlée, ho-hum sliced chocolate cake and uninspired, oversweetened fruit desserts abound. But dig a little deeper, and one can find a few outposts of creativity, such as Saratoga’s Sent Sovi, Ruffled Feathers Eatery in downtown San Jose, and Tigelleria in Campbell.