So I looked at Amazon for products. There's an ultrasonic brewer that is used for both cold brew coffee and also for rapid infusion of spirits with charred barr

So I looked at Amazon for products. There's an ultrasonic brewer that is used for both cold brew coffee and also for rapid infusion of spirits with charred barrel staves. There's also a stir plate / french press combo for sale that apparently does fine cold brew in 20 minutes.