For some reason I think of it as an older concept. Now Starbucks and coffee chains are popular.
Seinfeld on instant coffee https://youtu.be/uDrh5pujB9I?si=VdlVEREjMTNd2Bs7
Highlighting carlcook’s advice:
dissolve in cold water, ONLY THEN add hot water. The rationale behind it is that aromatics evaporate too quickly when the instant powder is infused with too/boiling hot water.
Not sure how you come to this conclusion. The waste is the same (if not more), just ends up somewhere else. Also, you’re adding a whole extra process (freeze drying) requiring extra energy, and water needs to be boiled twice (during brewing and at home).