*thread creep*

jeri - grape vine (especially from the european wine grapes), pear (sometimes sold as "fruitwood"), alder. Juniper berries can be used in moderation- often recommended for use with a "neutral" wood. Likewise clippings of thyme and rosemary can be used in a smoker - again - usually recommended for use with a "neutral" wood.

Of course I've never figurd out what is meant by a "neutral" wood. Oak perhaps?

I know the softwoods are NOT used...and I know one guy who swears by chips of old sherry casks.