Takeaway? That's food, innit?! [I Speak Old English]

There was a time when takeaway meant food you bought and took with you. Now it means summary of key points from dense material, it seems (emphasis on dense).

I quote: "Key takeaways from Donald Trump’s public mauling of Mitch McConnell," The Independent newspaper, today. I wonder if there's a burger in there, given it's American. I'm guessing sushi's not an option ;-)