2 tablespoons vegetable oil
3 cloves garlic, chopped
One 2-inch piece fresh ginger, peeled and thinly sliced
6 tablespoons Thai red curry paste
8 cups low-sodium chicken broth
One 13.5-ounce can coconut milk
3 tablespoons fish sauce
One 4-inch piece lemongrass, lightly bruised
Kosher salt
Pinch of sugar
2 pounds boneless skinless chicken breast or thighs, thinly sliced
3 ounces dried rice vermicelli noodles
1 small red onion, thinly sliced
1/3 cup cilantro leaves
1 bunch scallions, white and light green parts only, thinly sliced
1/3 cup torn Thai basil leaves
Juice of 1 lime