So I decided to brew a dubbel on wednesday, and I've read in multiple threads that it was a good idea to add the candi syrup to the primary after a fer days (3-5). I've had success with a similar technique with my tripel (adding clear candi sugar to the primary.)
I am brewing 12 gallons, and I purchased 4 pds of candi syrup. 2 lbs went into the boil (last 10 mins), and the other 2 I saved to add later on. However, I'm not sure if I want to add 1 pd, or 2 pds, depending on how strong the chocolate/toffee notes come out.
So the question becomes, could I add 1 lb after 3 days, and another lb (if I choose) on the 5th day?