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[Jtexans4]

Don't use instant coffee. I brewed a raspberry/coffee amber ale that used instant coffee and the instant ruined it. Cold steep the grounds and add that way.

 

[bdawg]

I agree, don't use instant coffee, cold steep it like JTexans said.

Oh, and one thing about bad smells coming out of a fermenting batch...
They are coming OUT. Some of the most foul-smelling yeasts make great tasting finished product. Wyeast 2112 (Anchor Steam Yeast) comes to mind. Many Sulphur compounds will stink to high heaven. Don't let them fool you into thinking its a bad batch.