Harvesting Heffe Yeast - any bottled beer?

I need some heffe yeast and I don't want to order some during this heat.
Was going to harvest the yeast form some unfiltered nicro brewed stuff here but the product is isoldand unavailable form the brew untill their next batch is ready. Actually two micors tried a test batch on the public this summer and supply now pales before demand.

Are there any imports you can harvest the yeast from?

I have some edelweis and hacker-pschor.

The hefe (yeast) in the bottle is for bottle conditioning.

You could harvest the yeast, but you need to use it at bottling time, not for fermentation. Sorry.

Not all heffe's do this. That's why I'm asking if anyone knows which don't use a separate yeast. And technically if the beer is unfiltered and not pasteurised it will have live yeast in it.