Burger King Impossible Whopper: calories, ingredients, and nutrition.

In a huge step for the plant-based meat movement, Impossible Foods and Burger King collaborated on a Whopper.There was a lot of hoorahs and grumbles from plant-based advocates and skeptics.You may be wondering how the fast food version compares to the original.You need to know about taste, ingredients, calories and more.

Burger King's famous Whopper sandwich is made with an Impossible Foods burger patty.According to Brian Cooley, it looks and tastes the same.

A regular Whopper includes a quarter-pound patty, tomatoes, lettuce, mayonnaise, ketchup, pickles, white onions and a sesame seed bun.

In place of the usual flame-grilled beef patty, there's an Impossible Burger patty with a unique ingredient called soy leghemoglobin and other ingredients that make it meat-like.

Impossible Foods made a special patty to conform to Burger King's exact bun diameter to make theImpossible Whopper look like the real thing.

TheImpossible Whopper can't be vegan because it's topped with mayonnaise, which is made with eggs.The burger could be classified as vegetarian if you eat eggs and dairy products.

Cross-contamination is a problem in fast food restaurants.The restaurant acknowledges that the Impossible Whopper patty cooks in the same way as chicken and beef.

If you want a fully meat-free burger and want it without mayonnaise, you can request a non-broiled method of preparation.

If you want the Impossible Whopper to be vegan or vegetarian, you'll have to ask for a non-broiled method of preparation.

TheImpossible Whopper has 630 calories.That's not a lot for a single meal, but it is less than the original Whopper.A combo of a soda and fries will add up to more than 1,000 calories.

Depending on your perspective on "healthy" food, the Impossible Whopper may or may not offer a better nutrition profile.Both versions of the Whopper are not particularly healthy.Fast food is usually ultra-processed and high in calories, salt and inflammatory oils.