Why do you all keep calling it Penang curry? Wikipedia spells it as "Phanaeng".
'The etymology of the word phanaeng is unknown, but it may derive from the Malay word panggang, meaning "grilled."'
https://en.m.wikipedia.org/wiki/Phanaeng
That is somewhat different to "Penang" which is the Malay name for the areca nut.
"The name Penang comes from the modern Malay name Pulau Pinang which means 'areca nut island'."
https://en.m.wikipedia.org/wiki/Penang
inb4: if you think Wikipedia is full of it then cite credible academic sources or get off my lawn 🤣