See http://indianspicetrail.blogspot.com/ [1], this is my blog where I have more recipes.
Put a large pot of water to boil, when it boils add the rice noodles, stir, cook for about 5 minutes, till tender. Drain and put it back in the same pot, keep aside.
Meanwhile heat the vegetable oil in a skillet, add mustard seeds, when they splutter, add the green chilies, ginger, curry leaves and stir for a minute or two.
Add turmeric, pour this on the noodles. Add salt, pepper, sugar, lime juice, cilantro, lime zest, and sesame oil. Stir well to combine. It will take a lot of stirring to get all the noodles well seasoned.