Boston butt - 500g (500g, can also use belly part)
Green onion - 1 (Green part only)
Ginger - 2-3 slices (sliced)
Garlic - 1 clove (crushed)
Soy sauce - 150ml
Mirin - 100ml
Saké - 100ml
Sugar - 1 tablespoon
Salt - 1 teaspoon
Water - 50ml
Bonito stock soup - 50ml (optional)
Instructions
Season the Pork: Rub salt into the Boston butt to season it, then slowly sear the outside.
Make Char siu Sauce: Combine green onion (green part), ginger slices, crushed garlic, saké, mirin, soy sauce, sugar, and salt in a pot. Heat on low until warm, then turn off before it boils.
Cook the Pork: Wrap the pork with a paper towel, place it in a ziploc bag with the sauce, removing the air from the bag. Cook in a rice cooker filled with boiled water on 'keep warm' setting for 3-4 hours. Refrigerate for half a day before slicing.
Prepare for Serving: Slice the pork as desired for topping the ramen.