So what is it? Sup or sop? And if both are valid, is the differece regional/ethnic?
I was wondering if you can also "minum sup" instead of "makan sup" (drink instead of eat).
Nope, sorry. Even though it can be all fluid it's always a meal, not a drink. Even if you have it in a mug ;)
"Saya makan sop panas" was marked as wrong, even though that's shown as an acceptable spelling for "soup" and is definitely the most common spelling here in Jakarta.