Ketchup and Mayonnaise Broccoli?!

This may sound weird, and I do have to put in the disclaimer that this dish may play to an acquired taste for creative Japanese food. (Also, American mayonnaise is not that good, so that might throw this off.) But try it anyway! It's really good. :)

Ingredients

1 chicken thigh
1 head of broccoli
1/4 cabbage
1 large onion
2 tbsp ketchup
1 tbsp mayonnaise
salt
pepper

1. Wash and cut broccoli, then boil for 3-5 minutes in slightly salted water. Wash and cut the cabbage (into convenient pieces) and onion (thinly), and cut and lightly salt-and-pepper the chicken.
2. In a large pan, cook the chicken on medium heat until it is about half-cooked. Then add the cabbage and onion, and continue to cook on medium heat for another 2-3 minutes.
3. When the vegetables begin to soften, add the broccoli and continue to cook for 1-2 minutes.
   
4. Turn the heat down to low, then add about 100 mL of water to the pan. Add the ketchup, and return to medium heat and cook for 1 min. Then add the mayonnaise.
5. Let the whole thing summer for 2-3 minutes, then serve.