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.
I do when I can’t be arsed otherwise.
On a good day, I slowly simmer oat milk and water in two pans and Aeropress fresh-ground coffee to make something akin to a flat white.
Can’t be arsed? Oat milk in a mug in the microwave for 1-2 min and a tablespoon of Medaglia De Oro instant espresso powder.