DIET POSTMODERN INCOME CONVERGENCE SLIPPERY SLOPE TO STARVATION

First, you become a vegetarian. It costs less than meat. It is usually bland as a dog.

Then you become a vegan. It costs less than meat, dairy, and other protein. 

Or it should.  But not in the West, where they get a premium for crap from globozos.

It is mostly about Asian ' bowls '. It is what passes for cuisine, in Asia.  Yours look good to you, right now.

Then, in the end, after the global income convergence kicks in, you just starve. That is the cheapest of all.