Happened to stumble upon this on one of my recipe viewing sessions and was bored of eating sandwiches, so tried this out and it was really nice. You don’t really need the curd either, just water is fine till you get the right dosa pouring consistency.
If your tava is too hot you can’t spread this at all – it solidifies really quickly, even more than the normal dosas, so maybe keep the tava on medium heat or pour a larger spoon of the batter? I don’t know 🙂 – maybe I’ll update this next time.