How to Make It
In a medium saucepan, bring 1 1/2 cups of water to a boil. Add the carrots and cook until crisp-tender, about 2 minutes. Using a slotted spoon, transfer the carrots to a plate. Reserve the carrot cooking water.
In a mini food processor, puree the lemongrass with the ginger and sugar.
In a large, deep skillet, heat the vegetable oil. Add the onion and cook over moderately high heat, stirring, until golden brown. Add the lemongrass mixture and cook, stirring, until fragrant, about 2 minutes. Add the ground pork and cook, breaking up the meat, until no pink remains, about 3 minutes. Add the coconut milk and reduce the heat to moderate. Stir in the red curry paste, Sriracha and lime juice and turn off the heat.
In a large pot of salted boiling water, cook the noodles until al dente; drain well. Add the noodles, carrots and carrot cooking water to the skillet and toss over moderate heat until the noodles are thoroughly coated. Add the basil, season with salt and pepper and serve.