Ragam, Fitzrovia, London
Very good masala dosa - thin and crisp, with a very slight and soft undertone of sourness in some of the thicker parts. Fairly good filling - soft potato with pleasant spicing -- flavours of curry leaf and mustard seed. The two varieties of coconut chutney were better than most I've had -- a clean nutty coconut base for both, one green and minty/herbaceous, one orange/red with more spicy chilli overtones. A fruity, sour sambar, the prominent tamarind integrating nicely with the spices, maybe a hint of ginger somewhere. They come together extremely well, the nutty toasty chutneys, the tangy sambar, the dry woodsy spicing on the potato -- it's the type of clean, balanced composition that would cost 5-10x more in a "fine dining" restaurant.
The salty lassi belongs to the thinnish liquid variety, with a dusting of cumin on the surface.
Payasam is achingly sweet as it should be, sugar and cardamom carrying the watery rice and cream/milk with raisins and cashews.
This was probably better than many of the ones I've had in Tooting and the potatoes were indeed on the dry side (in a good non-oily way). People seem to like the ones at Sagar and Jfores has mentioned a bunch of other places, all of which I've yet to try. Was wondering if anyone can offer a comparison.