Questionable footage has displayed the “nasty” process behind creating the McDonald’s McRib burger, with many customers vowing to never order the item again.

A video shared to Twitter this week evoked repulsion from thousands of viewers after it showed frozen blocks of the “rib” product being slapped onto a grill in batches of six.

Once thawed, the items, which had been preformed into riblike shapes, were taken from the grill and placed into pullout containers filled with thick brown sauce.

The slabs were then placed on top of onion and pickles on a lightly toasted bun before being closed into a box and sent down a chute to fulfill an order.

nypost.com