1stalk green onion(10 g / 0.35 ounces) (white parts only)
Put the soy sauce, sugar, water, rice wine and green onion into a sauce pan and start boiling it on high heat.
When the mixture in the sauce pan is rolling boiling (3-4 mins into the cooking), take out the green onion with some tongs and reduce the heat to medium.
Add the hard-boiled eggs into the sauce pan gently and simmer until there are about 1/2 cup worth of the sauce left in the sauce pan (about 15 mins into the cooking). -While the eggs are being simmered, lightly roll them around in the sauce pan.
Turn the heat off and cool down the eggs.
Take out the eggs and slice them into a bite size and serve. (They can be served warm or cold but I think they taste better when slightly cold.)