Can one make as good of a coffee concentrate using instant coffee as one can make with ground coffee?
You can check the answer of the people under the question at Quora “how to make coffee concentrate with instant coffee“
Can one make as good of a coffee concentrate using instant coffee as one can make with ground coffee?
You can check the answer of the people under the question at Quora “how to make coffee concentrate with instant coffee“
No.
You can not make a “good” coffee concentrate with freeze-dried, reconstituted coffee (instant coffee). And even if your ground coffee is pre-ground (stale), your instant coffee extract will not be “good”.
Why would you bother to use anything other than fresh (two weeks from roasting or less) coffee, never pre-ground for your extract, which will only amplify deficiencies in lieu of freshness and quality? If cost is your only concern, quality is of little concern, but it really doesn’t get much worse than instant coffee unless it isn’t even coffee but is chicory instead.