Blanch trotter in a pot of boiling water for 15 minutes. Remove and clean under running water to remove any scum. Drain.
Heat sesame oil in a heavy-based pot and fry ginger until fragrant. Pour in both vinegars and water, cover and simmer for 30 minutes before adding the trotter, both sugars and dates. Cover and bring to the boil.
Reduce the heat and simmer for an hour or until trotter is tender. Stir in thick soy sauce for colour and allow the trotter to soak in the sauce until the flavour has developed before serving.