I make a very strong cold brew anticipating the ice cubes will dilute it a bit.
I start with Peet’s major dickinson blend, which i think is darker than the roast you’re using.
Through trial and error i also now grind the coffee smaller which made a not insignificant difference- although with the machine you’re using I’m not sure if that will be a problem (i just use a fine sieve).
With your recipe listed i would start with grinding smaller and reduce the amount of water by one or two cups and continue to tweak it from there
