Belgian Quad infected?

[abciximab]

So I brewed a Belgian quad about 3 years ago, transferred it to secondary and there it has sat, in the corner of my pantry. Fast forward to today, and I’m picking up brewing again. I decide to look at my quad and here is the top layer:

It hasn’t grown appreciably in terms of thickness. Here is the side of the fermenter:

Any thoughts as to what is going on? It doesn’t look like mold, right?

 

[day_trippr]

Definitely must book that first picture here https://www.homebrewtalk.com/forum/threads/pellicle-photo-collection.174033/
Don't know what that might be but perhaps the folks that hang out in the Lambic and Wild Brewing forum will...

Cheers!

 

[abciximab]

Is that a pellicle and do I likely have a sour quad? Or does anyone see mold?

 

[IslandLizard]

Is that a pellicle and do I likely have a sour quad? Or does anyone see mold?

Pellicle, yup!
No mold.

 

[madscientist451]

I think its time for a taste...

 

[RPh_Guy]

+1 all of the above.
Pellicle, not mold. Taste it.