was it sour or a bitter taste? what type of smoker are you using? i really can't see why there would be a sour flavor...every thing that is added to this is "sweet"...combining the syrup, honey and brown sugar is fine...the only thing i can really think of is you may have put "to much" smoke to it creating creosote...which will give your food a very bitter flavor..
Sure can tell I'm new at this. I smoked a ham for dinner today using this post as my inspiration, maybe I should have read the directions a little better. My ham came full of smoke flavor a plus but it had a sour taste to it. One thing I noticed that I did different was I combined the syrup honey and brown sugar and poured that mix on top of the ham. Any suggestions on why it became sour to the taste.