You seemingly have to give up on the concept of fuck nestle for that. I have tried a few store brands but a couple may have been made by nestle behind the scenes. They were all the same or worse. Supposedly other brands exist but I haven't seen them sold anywhere.

I ended up just grinding a whole bag of beans and mixing direct with filtered water in a big jar, leaving it sealed on the counter for a day, then dumping through a cooking oil/soup stock filter into another jar. If the filter clogs I pick it up like a piping bag and put a new one under and just stab the old one with a knife or chopstick to let the pooled up coffee into the new filter. I dilute it generally 50/50 for drinking but it varies by beans. For mixed drinks, ice cream, or other cooking I don't dilute it.