I am attempting a crabapple beer. Last week, I brewed a wheat beer for the base and I have about 10 lbs. of crabaplles in the freezer waiting to be added to the secondary (I usually don't use a secondary, but I assume it is a good idea for the fruit). My question is--should I parboil the crabapples to sanitize them before adding to the secondary and racking the beer over them? If parboiling is advisable, should I crush them before or after the boil?