Place in a heatproof bowl:
Pour boiling water over the noodles until they are submerged. Use tongs to push them under the water as they soften. Allow to sit, checking every couple of minutes, until the noodles are limp and tender. If using flat rice noodles, this may take up to 10 minutes, but very thin rice noodles will take considerably less time. Drain the noodles and rinse under cold water. Set aside.
Heat in a heavy pot or Dutch oven over medium-high heat until shimmering:
Add and cook, stirring, for about 15 seconds:
Add and bring to a boil:
Add:
Return to a boil, then reduce the heat to medium, cover, and cook just until the clams have opened, 3 to 5 minutes. Stir in:
Divide the noodles among individual bowls, add the clams, and pour the broth over them. Serve with: