From Kentucky Fried Chicken’s Double Down sandwich to Pizza Hut’s hot dog stuffed crust pizza, fast food chains in the United States have been taking taste buds and calories to new limits.

That attempt to please consumer’s palates shows no signs of slowing down.

Eager to lure customers to their counters this summer, the fast food chain Burger King is introducing a bacon sundae to its menu.

This crazy soft serve dessert took Nashville, Tenn. by storm earlier this year, where it was first launched.

The sweet and savoury dessert features the rich and creamy vanilla Burger King soft serve ice cream, drizzled with chocolate fudge, caramel and topped with bacon crumbles. The sundae is then completed with a thick-cut, hardwood smoked bacon garnish.

The introduction of this limited-time concoction is yet another example of how fast-food chains are trying to stay competitive in today’s market.

This outrageous treat is affordable, with a suggested retail price of US$2.49. But it also takes a heavy toll on consumer’s waistlines. The sundae clocks in at 510 calories, 18 grams of fat and 61 grams of sugar.

Fantastical combos such as these are nothing new to the fast-food market.

Over the years, this traditional breakfast meat has crossed over into all kinds of foods and beverages such as bacon doughnuts, bacon martinis, bacon chocolate and bacon funnel cake.

The West Coast fast food chain Jack in the Box made a splash earlier in 2012, when the company launched its bacon milkshake.

Using bacon-flavoured syrup rather than real, sizzling meat, this super-sweet shake clocked in at 1,081 calories, 37 grams of saturated fat and 108 grams of sugar.

Those stats probably sent nutritionists’ hearts racing. But for fast-food junkies, the bacon treat was an inspiration.

Adventuresome foodies will likely feel the same about Burger King’s bacon sundae.

Burger King introduces bacon sundae

Burger King introduces bacon sundae