do you mean the noodles fried into the shape of a bird's nest. if so, i've seen them made in a wok of hot oil. the first was simply to put a block of noodles, i think they were bean thread noodles, into the hot oil, and quickly submerge them by holding them down with a appropriate sized ladel. the nest will form up around the ladel. if you're good and have the right sized ladels, you can use 2, a larger and a smaller ladel, and from the nest a little tighter between them in the oil.
in nomine patri, et fili, et spiritus sancti.
Meh nom eh noh...doot dooooo do do do.