I recently bought this 4 liter Northsider Cold Brew Sistem Mini Series. It consists of plastic bucket with valve, nylon filter, measurement cup, and 500gr coffee.
The guide says to use 1:4.5 ratio of coffee to water. In internet you can surf, it says 1:8 ratio for cold brew immersion method for 12 to 16 hours. I tried both ratio.
Why I bought this cold brew system? I bought it because I want an easy and fast way to produce lot of cold brew with cheapest tools. Does this system serve this purposes? Let's compare this system to suji drip cold brew persona 300. See Suji Persona 300 review
The ratio of coffee to water
Northsider - 1:4.5 1: 12 - Suji Persona 300
The ratio of dilluting cold brewed coffee to drink
Northsider - 1:1.5 none - Suji Persona 300
Final ratio
Northsider - 1:6.75 1:12 - Suji Persona 300
Theoritically, the above ratio is correct. I will show you the actual.
Time to brew in hours
Northsider - 12h 2h - Suji Persona 300
750gr coffee 25gr coffee for
3.38 ltr water 300ml water
Actual coffee made
Northsider - 2500ml 250ml - Suji Persona 300
12 hours 2 hours
Dilluted coffee made
Northsider - 3750ml 250ml - Suji Persona 300
Final ratio
Northsider - 1:5 1:10 - Suji Persona 300
Equivalent time in hours to make 3750ml dilluted cold brew coffee
Northsider - 12h 30h - Suji Persona 300
Now the taste.
Immersion method create more dull taste than the drip method.
Immersion method makes cold brew coffee 2.5 faster (12hours brew time compare to 30 hours) but 2 times more expensive than the drip methode (1:5 final ratio coffee to water compare to 1:10).
Suggestion
Use of immersion method for robusta coffee only to be served with milk. Or nitro perhaps (?) Haven't done that yet.
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