Any black coffee, including instant, will taste gourmet with a bit of lemon peel, honey, and, if you're feeling fancy or need something a bit sweet, a nice dash of condensed milk. Try it next time you're at a meeting where they only have shit tea and coffee, you'll thank me later.
My Brazilian friend showed me, I assume it's related to this: https://therecipecritic.com/brazilian-lemonade/