This answer about creating infusions suggests using a compressed gas siphon to quickly infuse liquids with flavours from 'fragile' herbs.
The manufacturer of the popular iSi compressed gas siphons seems to sell whipped cream and soda siphons, but neither is advertised for the aforementioned infusion purpose. I'm not at all averse to using one of these devices for this different purpose from that which it was designed, but I'd like to find the most usable device for creating infusions using compressed gas.
This leaves me with the following questions:
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Is there a compressed gas device designed specifically for creating infusions using this method?
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In general, would a soda siphon or a whipped cream siphon be more suited to creating infusions?
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Are there particular attributes to look for in a compressed gas siphon that lend themselves to creating infusions?
Best Answer
1) I do not think so, the technique was described in e.g. modernist cuisine, they suggest using a ISI siphone and if I can remember correctly does not describe any other tool. Any pressure chamber would work, if you have access to one :-)
2) I have something like this which can be charged with both soda and cream charges, that is what I woudl suggest. (mine is not ISI). Think both you show will work since both charges are the same. Charge with N2O (cream charge).
3) For the infusion part, you want pressure, look for size of the device that suits your needs. The bigger, the more you can do at the same time, but will require more charges for same pressure.