Cerreta's is a true Glendale tradition. It's a pretty cool old fashioned candy factory making their selection of treats on site in huge quantities. The tour is really like stepping back in time and everything still basically looks like its right out of the 50s. Their French Mint Meltaways are really they obvious item you have to try, but I also found the chocolate turtles to be pretty awesome too.
Don't expect to spend a whole lot of time here. Even with the tour, you don't need to be here more than 45 minutes. Just plan to take a mixed bag of chocolates with you when you go. You probably won't be able to resist.