Braised Pork Japanese

Parboil pork for ~30minutes with enough water to cover the meat, add ginger and leek greens to absorb smell and impurities. 
 Dispose of water 
 Into the rice cooker add : 
 
 100ml Cooking sake 
 80ml Soy sauce 
 60ml Mirin 
 2tbsp sugar 
 400ml water 
 How many (already boiled) eggs you like (as long as they fit in the rice cooker)
Cook for 1h30