The first McDonald's outlet selling all-you-can-eat fries is opening in the United States in July.

The outlet in St Joseph, Missouri, is being marketed as "The McDonald's of the Future", boasting table service and a customised menu.

Customers can select the ingredients for their burgers, desserts and chicken sandwich orders. They order their meals at digital kiosks.

According to St Joseph News-Press, outlet owner Chris Habiger said: "There really are hundreds of different choices to build the burger of your dreams."

After placing their order, customers will be served their meal at their seat by McDonald's staff.

In Singapore, a Create Your Taste service is already available. Customers can choose from a range of ingredients to create their own burgers.

According to the McDonald's Singapore website, there are 21 outlets listed that offer this service, including outlets at Suntec City Mall, Raffles City Shopping Centre, JEM shopping mall and Yishun Safra.

The new 6,500 sq food space in Missouri will house a play place featuring interactive light board tables, tabletop video games and digital play.

The outlet will also include a party room equipped with dedicated staff for private events.

Construction is estimated to cost US$1.59 million (S$2 million) .

Reactions to the all-you-can-eat fries deal on social media have been mixed, with some users worrying about expanding waistlines and health concerns.

Said Twitter user Brittany Mauricio: "McDonald's is gonna offer all you can eat fries. RIP plans to fit into high school jeans."

Another account linked over-consumption of french fries to a higher risk of getting a heart attack.

Other users reacted positively to this announcement.