What do you think of this poem?

Nice use of metaphor here. Just a couple of critiques. Take "that is" out of the third stanza (it is unneeded and interrupts the flow); as well as "that deliver" in the fourth (this might actually just be in need of restructuring. The final three lines, perhaps, should read : "Green beans always/need seasoning/to be palatable" in an effort to remove "that." Use of "that" will always bog down your flow and should be used only when ABSOLUTELY necessary and unavoidable; most of the time they can be simply removed, other times the line can be reworked so they become unnecessary.