1 Heat up the noodles and water, and bring up to a boil. 2  Boil the noodles for about 5 minutes, then drain again. 3  This is to get rid of the smell that most shirataki noodles come with. 4  Now you want to dry the noodles completely, so the noodles can soak up the sauce. Drain the noodles in a colander and place over running water for a few minutes to rinse. 2  Cut the noodles into thirds, and then place in a pot filled with water. 3  Heat up the noodles and water, and bring up to a boil. 4  Boil the noodles for about 5 minutes, then drain again.