California's cities are so rich in culinary treasures, there aren’t enough meals in a day to give visitors a fair taste. Food tours offer a solution, allowing groups to experience a half-dozen or more gastronomic options, while learning about the destination’s history and landmarks. A plus: Food is a universal language. Tacos, pizza and chocolate are some of the most e ective means of bringing together people of di erent cultures, job types and ages. Here are six delicious adventures, from San Diego to Sacramento.