Fry eggplant till lil brown.. Keep out n keep aside.

Now heat remaining oil.. After smoke oil.. Add garlic chopped.. Let lil bit golden colour now add chopped onion.. Let it transparent... Add ginger chopped.. Fry for two minutes.

Now add mustered paste or Mustered sauce.. Add tomatoes.. (u can cut tomatoes into pieces or not.. Its ur choice.. I didn't cut into pieces.. Just gave four cut mark.

Now open the lid n add sugar.. Its totally optional.. Sugar balance the tangy ness of tomatoes.

Mustered Paste recipe.. Take two tbs mustered seeds.. Wash it n grind with two green chilli, salt n four tbs water.. U get a smooth paste....................... U can use mustered sauce too.. Then avoid to use sour Tomatoes.