Under-Study in Napa Valley is a refined patisserie in St. Helena offering elevated pastries, savory bites, and café fare. This post may contain affiliate links. Please read our disclosure policy. Under-Study Napa Valley In the heart of St. Helena, at 595 Saint Helena Highway, a new culinary destination has quietly stepped into one of Napa … Continue reading Under-Study Napa Valley Review: Elevated Patisserie in St. Helena