Been curious about this myself.
Tassie oak is used in barrels and is often used for aging wines.
It is also used to make smoking chips. to quote a company making them ..
Many of our woods are sourced from Australian suppliers where possible. We also import product from the USA.
The range includes CHIPS, CHUNKS, DUST, FINES & WOOD PELLETS in Hickory, Mesquite, Apple, Pecan, Alder, Cherry, Alder, Mallee, Oak, Mountain Ash, Tasmanian Oak, Peach, Jam, Olive, Oak Wine Barrel, Bourbon Oak Barrel, Sheoak and even Beefwood.
I have done a bit of machining work with tassie oak and have never noticed any sort of gum hint from it, I doubt its toxic particularly if used for smoking chips but theres a lot of whiskey makers in tassie and they all use 'real' oak so I guess they would know.
It seems the word eucalyptus scares people the most yet its character is used in wines.
https://www.awri.com.au/wp-content/uplo ... Report.pdfall I can find for spirits is this text in portuguese for storage of cane spirit in 'different types of eucalyptus'
http://www.scielo.br/scielo.php?pid=S01 ... i_abstractinteresting bit is ..
The composition of the sugar cane spirit stored in these kind of wood showed pattern according to the Brazilian law, indicating their potential use as barrels for the storage of sugar cane spirit