A very traditional Massaman Curry calls for Seville orange or som sah which is becoming more difficult to find in Thailand. I always have made massaman curry without the orange. Seville orange or som sah has lost its popularity, but is making a come back in the Thai culinary world. I was curious how the orange would add to this already delicious curry. I was not disappointed; the orange added a whole other dimension.
Massaman curry has many accompaniments. Some palaces serve massaman curry with mee grob, fried salted egg, beef jerky or crispy fried anchovies. Klong Bangluang residents (a large Muslim community 200 years ago) ate massaman curry with crunchy fried fish, watermelon and pickled mustard.