The alchemy station quite frequently freezes up. Sometimes when infusing but mostly it has happened while researching stats.
I don’t know if its specific ingredients its freezing in.
Once I infuse my specially made drink and then try to research its stats the station freezes and the only way to get it back is to reset it and lose all my ingredients.
Has happened 3 or 4 times on my own and when you hop back into the SL Store you will see that the two there are also frozen for the same reason.