How to save cooking gas.

This ideas struck me today afternoon. How to save cooking gas? The idea is to have a common community kitchen. You might ask, everybody has different food requirements. Yes that is true. What can be done is, the food that is consumed by many of them can be cooked in the community kitchen. Eg: Rice, Chapatti, Bread etc. These are all common food consumed by most. People can cook side dished at their home. Thus saving cooking gas.