Orlando Weekly
Considering that we're in the midst of the sweet Vidalia season, it's a good time to ask. Simply speaking, what makes Vidalias different from other onions is the ratio of sugar to acid. Whereas most onions have a sugar content of about 7 percent and are high in sulfuric acid, Vidalia onions have a whopping 12 percent sugar and an extremely low amount of sulfuric acid. What most people don't know is that Vidalia onions were a happy accident.