Alchemy discoveries (again)Follow

Can someone authoritatively confirm that alchemy discoverys are possible with Northrend recipies?

I have done litteraly hundreds of flasks and elixirs to finish off the few recipies that I don't yet possess.

No luck with discoveries in ages.

My question pertains to Northrend recipies because I actually have (in my insatiable need for Frost Lotus) an ever increasing supply of high end herbs.

However, I'll sell them if I should be using Outland recipies.

(I know it says 'Outland or higher").

Just hard to believe a thousand elixirs generates no discoveries.

Thanks

By the way, if you are still needing the Mighty Arcane potion (last of the 4 likely), as of 3.08 you don't have to farm those anoying Frostbrood Spawn.

Now also drops from Cult Researcher found INSIDE Aldur'thor. (second kill for me).