I found them at an Indian market, but I know they're not available for everyone. After making the
rice, the curry leaves have a nice aromatic scent and flavor to them but it's not like the flavor of curry. Such an interesting thing, right? I did a bit of research online and found that although there isn't a substitute for the curry leaves many people used basil and bay leaves as a substitute.
I would recommend adding about 10 basil leaves or a small branch of them (for ease of removal) and one small bay leaf in the recipe. I'll edit the recipe to say this.
If you do ever find an Indian market, buy some curry leaves and freeze them, I really like the nuance they gave and it's so different. Think it would be great in soup and curries!