By all accounts,McDonald’sis the most-popular burger business in the country.

So how does it get from the farm to the drive-thru?

Read on to find out.

mcdonald’s sign billions and billions served

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Related:8 Worst Fast-Food Burgers to Stay Away From Right Now

Where’s McDonald’s meat from?

McDonald’s also says it partnered with Keystone in developing its wildly popularChicken McNuggets.

And our Quarter Pounder burgers are made from 100% fresh beef patties in the US."

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McDonald’s/Yelp

The process by which McDonald’s burgers are made isn’t a well-guarded secret.

The patties are then machine shaped.

Some have concerns about this meat and the treatment of animals.

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Icahn called these “poor excuses.”

There are also antibiotics concerns.

Top performers, according to the report, were Chipotle and Panera.

Both companies were given “A” grades for the sixth consecutive year.