Way to maximize vanilla flavors from yeast?

I’m looking to brew a berry-flavored hefe (something in the vein of Leinenkugel), but with a bit of a twist. I was first thinking of adding some vanilla extract, but I know some yeast strains can have a bit of a vanilla characteristic. Does anyone have any suggestions on any strains that have a strong vanilla component? I’d be leaning toward a weizen or wit strain, but I’m willing to experiment. Also, is there a temperature range or any other fermentation variables that can enhance the vanilla (like under/overpitching)?

In going with the fruit/berry/sweetness combo I’m fine with banana and/or bubblegum flavors, but I’d prefer to keep the clove to a minimum. Thanks!

If you want vanilla without other phenolics I would use a non-phenolic yeast and add vanilla.

What strains give vanilla flavors? I’ve never noticed that before.

you might also try oak. it can give a nice vanilla flavour without being extracty

I notice it a lot in German wheat beers bought bottled in the US (but not similar or identical beers draught in Germany). I’m not sure if it is the clove dropping out that makes the vanilla apparent or the vanilla isn’t there to begin with and the result of a chemical reaction. I get it reliably in Aventinus.

Wyeast states that their Bavarian Wheat (3638) strain produces some vanilla phenolics:
http://www.wyeastlab.com/rw_yeaststrain_detail.cfm?ID=59

I think I may just end up using vanilla extract in the end since I plan on using extract for the berry flavors. I’ll probably just give it a little extra time to bottle condition so the extract flavor mellows out a bit.

I never thought of trying oak in a hefe before, but that might be a nice counterpoint to a fruity ester profile. Maybe I’ll do a test batch of this somewhere down the line.

WLP500 (chimay) fermented cool has some nice “vanillaish” characteristics. You could also add some vanilla beans, or just a quarter of a bean/pod. I think most would agree to go pod over extract.

I don’t think you can get true vanilla flavor from yeast.  What you really need is good pure vanilla extract from Mexico or the Caribbean, not the crap they sell us here in the USA.  Beans might be alright, but I’ve had the best success with Mexican extract.

you have to be careful with mexican vanilla extract and make sure it is pure vanilla extract because a lot of it is fortified with vanillin (sp?) which is not a huge problem but not the same as real vanilla extract. oak gives vanillin as well. I would imagine that any vanilla flavours from yeast are the same.

you can also make your own extract by getting high quality beans and soaking them (Split down the middle) in good vodka or really high proof white spirits (white lightening).

The extract suggestions make me wonder what would happen if you used a batch of vanilla priming sugar by dropping a vanilla bean in your priming sugar for a week or so before bottling…

Interesting idea!  I think it might work, but might turn out a little weak.  I’m really not sure.  You could try it and let us know!