NITRO

 This gas gives beer a creamy and smooth mouth feel (tiny bubbles – now that song is in our heads). Nitro also tend to have less perceived bitterness because CO2 is acidic which adds to bitterness perception. ...  Nitrogen, however, does not stay in solution as well as CO2. A nitro Cold brew coffee should be drunk quickly after released from tap because the nitrogen comes out of solution so rapidly that the beer will be flat less than 30 minutes. 

Similar process to cold brew so refer back to cold brew for details.  once the coffee is cooked place in keg. And I prefer to chill my KEG empty until I am ready to place cold-cooked coffee in keg.  Activate the nitro - introduce the proper amount of  nitro to keg (this will vary on how big    your KEG is you are using.  give the keg a shake. and each day before first use one more shake.

 Adding nitro to coffee also began as a fringe idea about seven years ago in Austin. 

But  Minnesota-based Caribou Coffee was credited to  be the first ever "national chain" to launch Nitro Cold Press, a premium version of its cold press coffee, to two Twin Cities Caribou locations .

Cross the World Coffee inc. Electra est. has been sampling Nitro Cold brew since August 2020.