I.e. my chef friend had ground jalapeno at her apartment, shit was good. Like cayenne level heat but with a different flavor
I had to go to like an international food market to find some near me which is weird given how ubiquitous jalapeno peppers are
Sumac is specifically malic acid (as in sour apples) instead of citric acid (lemons) or acetic acid (vinegar), and it's really cool how if you're careful you can tell each type of sourness feels distinctly different.
Neat.
Definitely. Even though sumac has a lemony flavor apart from its sourness, it's experientially distinct from actual lemon and extremely different from vinegar.