That is a touchy question my friend...
There are 2 possibilities...
Some folks say it's simply a cross of white labels Bubblegum x OG Kush.
I personally think it is this...
West coast dawg(3 rd backcross of chem/dawg) x a Paki Kush male.
Then that was crossed with an OG Kush male.


The reason I think it is this second one is because the Bubba Kush (original Bubba,pre 1998 or something) has a more Kushy flavor then OG.
But there is an OG flavor there in the background.
And it has a sweeter taste to it.
But not realy like Bubblegum.
Thats just my opinion.
And the dude who donated the polline from the Paki Kush is the guy who told me this.
So I tend to believe him.