Tips:

• After you make ginger paste, add some oil to preserve it for long. 

           Source: NDTV chef Marut Sikka

• To preserve green chillies for long, remove the stem and store them in a air-tight container or plastic cover. 

              Source: My Mother-in-law, and Yes!! it worked. I did a Google search too and found the same solution.

                                                               Do come back for more......