I plan on brewing a wheat beer next and I would like to add in natural flavoring. I have never used flavorings in any previous brews and I have seen some mixed opinions about which stage of fermentation to add the flavoring into. Some sources recommend secondary and others say first, still even some say I should just mix it in with the wort. I want to know if one really has more effectiveness than the other. Which would yield the best result?
On another note, I was thinking of using blackberry for the flavor and haven't found anything that would indicate that there is anything special I need to do for this, but if any of you have advice it would be much appreciated.