In our seminar at NHC, Drew demonstrated how to make a tincture in 10 seconds using a whipper (those NO powered canisters usually used for whipped cream). Here's an excerpt from "Experimental Homebrewing" to show how it works....
If you want to play with some other flavors, try rum or bourbon instead of vodka for complementary
extractions, such as vanilla beans.
If you have an old-fashioned whipping siphon, you can make a tincture in under ten seconds.
Load the siphon with your booze and your spice or herb. Seal the container and crack one cartridge
of CO2 or nitrous oxide into the siphon. Shake for a few seconds and then, holding the siphon with
the spout facing up, press the dispense lever and rapidly vent the pressure. Open up the siphon and
strain the infused vodka through a fine mesh sieve. This makes a great party trick to doctor one beer
in many different ways (or if you’re spiritually minded, it allows you to create an impressively varied
vodka cocktail list).