Yes, and I really can't find any decent Oyakodon here in Belfast, then I proceed to make my own (ok, I haven't really give another Jap restaurant - The Ginger Tree a try).
And these are the ingredients for 1 person:
50ml Dashi Soup (1/5 u.s. cup)
1 tbsp Soy Sauce
1/2 tbsp Sake
1/2 tbsp Sugar
1/2 tbsp Mirin
1/2 Small Onion
85g Chicken Meat (3 oz)
2 Eggs
10 Japanese Wild Parsley (Mitsuba) (I omitted this)
200g Rice (7 oz)
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The method is shown in the video below:
How to Make Oyakodon (Japanese Chicken and Egg Rice Bowl)