The ultrasonic tub, (Vevor LOL, like everyone else gets for their bike parts), speeds up the process, specially oak shards.
For comparison, I also have a Soxhlet apparatus. As the extraction is boiled in the bottom with the recycling solvent it does not make the best flavours but it's the fastest way to get stuff like cinnamon.
Between a longer time, soxhlet and ultrasonic, the ultrasonic gives flavours as smooth as a longer time without the wait. (The ultrasonic bath heating up is still a problem so I have to cycle it).
Time beats both.
I think a short path soxhlet maybe be as good. My setup is a bit fragile for a good vacuum though.
For comparison, I also have a Soxhlet apparatus. As the extraction is boiled in the bottom with the recycling solvent it does not make the best flavours but it's the fastest way to get stuff like cinnamon.
Between a longer time, soxhlet and ultrasonic, the ultrasonic gives flavours as smooth as a longer time without the wait. (The ultrasonic bath heating up is still a problem so I have to cycle it).
Time beats both.
I think a short path soxhlet maybe be as good. My setup is a bit fragile for a good vacuum though.