Kang Min-kyung Made Japchae With Konjac Noodles: Here's Whether That Swap Actually Works

Singer Kang Min-kyung had been craving japchae since morning, but she had a problem: a week full of on-camera schedules meant she wanted to keep things light. Her solution, shared on the 23rd via her YouTube channel 걍밍경, was to swap out the usual dangmyeon (glass noodles) for konjac noodles.

She loaded the dish with bean sprouts, used a reduced-sugar sauce to keep things spicy without the glycemic hit, and chose fish cake made without wheat flour. The result looked like a fairly standard japchae, the kind you might not clock as a diet version at first glance.

What the konjac swap actually does to your calories

The science on this is more concrete than most diet swaps get credit for. A randomized crossover trial out of St. Michael's Hospital in Toronto, published in the British Journal of Nutrition, put 16 healthy adults through meals where regular pasta was swapped for konjac glucomannan noodles at the same volume.

The numbers are stark. A meal built around regular pasta clocked in at 442 kcal. Swap everything out for konjac noodles and that figure drops to 77 kcal. Across a full meal including dessert, the konjac group consumed 47% fewer total calories than the regular pasta group. For anyone managing a busy schedule of shoots or appearances, that kind of reduction without changing portion size is a practical win.

The catch

Here is the part that does not make it into most social media posts about konjac: the konjac group reported higher hunger and lower satiety than the regular pasta group. Konjac noodles are mostly water and fiber, they take up space but do not necessarily keep you feeling full the same way carbohydrate-dense food does. The researchers noted that while konjac could be a useful calorie-reduction tool for weight management, more research is needed before drawing firm conclusions.

Kang Min-kyung's attention to the sauce is also worth noting. Japchae seasoning and processed sauces often carry added sugars that can quietly undo a lower-calorie noodle base. The American Heart Association specifically recommends checking packaged sauces and processed foods for added sugar content, which makes her choice of a low-sugar alternative more deliberate than it might look.

The konjac swap is not a magic fix, but paired with the right sauce and enough other filling ingredients, it is a reasonable way to cut calories without shrinking the bowl.