I tenderized the spaghetti by soaking it in water with baking soda. I made Pork front leg meat cold Jeyuk. I used the broth from this to boil the noodles.
I fried the tofu I bought from a local handmade tofu shop. I added water and seasoned and simmered it, then added vegetables to finish it off.
It seems to be 2-3 times thicker than the original spaghetti noodles. The noodles are moderately soft and chewy.
The Dubu-jorim is also very delicious.