Wash and remove hair from pig trotters.
cook pig trotters in boiling water along with a few pieces of ginger. Take out and place aside.
Heat vinegar in a large pot,bring to boil and put in pig trotters. Turn to low heat and let simmer.
Hard boil eggs, and remove shell.
When pig trotters are nearly soft, add in sugar and cook until melted. Simmer over low heat, cover and remove from heat. Repeat several times so pig trotters becomes soft.
Before adding the eggs, bring to the boil. Let eggs soak in sauce, and remove from heat.Serve when eggs are coloured.
The pig trotters can be prepared a few days in advanced, and can be kept for quite a while. However, add the eggs at most 1 day ahead as long hours of soaking will make the egg stiff and hard.