I am fortunate that my fil cooks v good pig trotters (vinegar) and to satisfy my occasional cravings, I will request for him to cook. Some food centres do sell that too but v rare to find vinegar ones... most are braised. The best way actually is to learn how to cook like me.. haha
Me! I love vinegar pig trotter too! Usually I will order it when I have dim sum on weekends. I know crystal jade and east ocean sells them 😀