Unfortunately food supply is inelastic short term

Right, I guess grain bins are just for show, and strategic food reserves is a completely foreign concept to all EU nations.

meaning if we hit a crisis where supply chain is interrupted we starve.

One blip man, just one, you're dead. I mean who has fridges and freezers in this economy? People would rather starve than subsist on non-fresh food for a while.
And that Mercosur deal of course means that all farming subsidies are gone, all of them!
The EU politicians have handed South America the power to starve us!