Here's how I do it.....
Start with vessel...pour a lb. of coffee in it...
Pour water over it to cover it.
I have a filter and a plug..
Sit over nightish...
Pull the plug and let the coffee run out.
Now I have some super concentrated coffee...
Take about 1/2 in. of the brew..and add good water to it...in a coffee cup. Nuke it...add whatever you want...
Vanilla ice cream works for me...
And it's a nice, very nice smooth cup of Joe.
No tannins or acids...
It's really good stuff....addictive.
FWIW-
I use a plastic water bottle. Grind the beans, put in bottle and add water. Shake. Leave on kitchen counter and shake once in awhile. Next morning strain thru a Melita. Add organic milk. Enjoy. I drink it cold (from the milk).
Ice cream (not always vanilla)...
My grandmother taught me to drink it that way as she did when I was a kid. She had a phrase she used that meant “mud in a ditch”. As Ive travelled around and would ask for it occasionally for dessert, people would think I was a nut and had never heard of such a thing thinking I was kidding.