Southern sour curry is known outside of the south as ‘yellow curry’. It actually is sour curry with fresh turmeric, extra peppers and a sharp sour taste. The turmeric turns vegetables and meats in the curry bright yellow, hence the name ‘yellow curry’.
Southerners add lime juice to get the extra sharp sour where the central sour curry relies on tamarind which give a more complex sour with a hint of sweetness.
I love this hot curry, but when it is made for southerners, it is often too hot for me. The ingredients required to make the paste is relative easy to find, so I make my own curry paste.
In a pinch, I can pour southern sour curry on top of rice and happily eat it any time. Say "roy jung hoo" when you're done! That's southern way of saying "delicious".