Step 1

Bring a large pot of water to a boil over high heat. Loosen the noodles and add to the pot. When the water returns to a boil, the noodles should be nearly done (2 to 3 minutes; or follow the package directions). Check the noodles by taste or touch. They should be tender but springy. Drain thoroughly.

Step 2

In a wok or skillet, heat 3 tablespoons of the garlic oil over high heat until shimmering-hot. Add the raw garlic, stir-frying until fragrant but not browned, a few seconds. Add the noodles and toss to coat. Add the shoyu, oyster sauce, and dashi powder and continue to stir-fry for another minute or two until the sauce is absorbed.

Step 3

Remove the pan from the heat and transfer the noodles to a serving plate or individual bowls. Reheat the fried garlic in the microwave until crispy, 10 to 15 seconds, keeping an eye (and a nose) on it so it doesn’t burn.

Step 4

Garnish the noodles with scallions and fried garlic before serving. Top with sambal if desired.