You can probably use whatever potatoes you want, but I didn't want to use all starchy ones (red) or all waxy ones (yellow) because ... actually ihni. It seemed like a good idea lol. I had a carton of miso broth in my fridge that I got in the section with all the chicken broth and beef broth etc. I didn't like it as much as I'd hoped plain, but thought it might be a good addition to my soup. I've never had miso paste so have no idea what to do with it, but I'm sure you could just add some to taste :D

I'm glad you enjoyed \\\o///