Finely chop the garlic and peel and finely chop the fresh ginger, setting them aside.
In a large pot or Dutch oven, combine the light corn syrup, soy sauce, granulated sugar, canola oil, chopped garlic, and chopped ginger.
Add the peewee potatoes to the pot, ensuring they are mostly submerged in the liquid.
Bring the mixture to a boil over medium-high heat, then immediately reduce the heat to low.
Cover the pot and simmer for 15-20 minutes, or until the potatoes are tender when pierced with a fork.
Remove the lid and increase the heat to medium-high. Continue to simmer, stirring occasionally, for another 10-15 minutes.
The sauce will gradually reduce and thicken, developing a rich, glossy, lacquered consistency that beautifully coats the potatoes.
Stir gently during the final stages of reduction to ensure even coating and prevent sticking to the bottom of the pot.
Once the potatoes are thoroughly glazed and the sauce is thick and syrupy, remove from heat.
Serve Gamja Jorim warm or at room temperature as a flavorful Korean banchan (side dish).