When to add fruit?

Ingredients
1

Hey everybody.

My friends and I are wanting to try making an all grain chocolate rasperry stout.  I wanted to know at what step do you add the rasperries (can you add them at some point in the boil or just in secondary or some combo) and in what manner do you add them (whole rasperries or a puree or some other way)?

As always, thank you.

2

Freeze them now, when the stout is done with primary thaw them and add to secondary. It will kick off some additional fermentation activity so give it time.

3

Yes, I would do exactly that.

4

Thanks.