Hi,
I've completed a govt recognized food processing and preservation course some time ago. Almost all fruits or vegetables, grown, can be processed. The process differs only in terms of what end product you wish to derive and market. Whether you wish to enter the B2B space or B2C and so on.
For instance tomatoes can be made into and sold as pulp, tomatoe puree, tomatoe powder, tomatoe chutney and so on. It also largely depends on the variety of tomatoes etc.
The govt is offering grants, yes grants apart from soft loans for setting up food processing units. As during bumper harvest the produce is going to waste.
Depending on fruits and vegetables that you grow and in your neighborhood, you can process and pack it. Certain norms need to be followed to maintain hygeine and quality.
Hope this helps.