I always thought “proper” Nikujaga is made with beef but never with pork. That’s how my mom always made it, so I made it that way too.
One day a friend told me that Nikujaga at her home was always with pork. Blasphemy! However, I didn’t have sliced beef on hand today, so I tried it with pork like hers, and it was actually really yummy! Sometimes I’m too stubborn to change certain recipes, but it is good to be open to new ideas. Chicken must work too!