This slider may be small, but it packs a lot of flavour. It comes with smoked cheese, caramelised onions and a pickle slice …

… and, of course, the Impossible patty, which is made from soy protein, potato protein, coconut oil and sunflower oil.

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One bite in and a single word came to mind: steak. This slider smells and tastes exactly like a meaty steak.

And believe it or not, the sunflower oil is why it has its meaty smell. The sunflower oil has heme in it, which is a molecule that contains iron and gives this slider a meaty flavour.

Plus, the caramelised onions, smoked cheddar, pickle and warm, toasty bun complemented the patty well.

Next, I hit the Carl’s Jr. in Brooklyn, New York, to try its Beyond Famous Star cheeseburger.

Carl’s Jr.’s Beyond Famous Star with cheese was US$7.49, quite a bit more than White Castle’s slider.

But this burger was also much bigger and worth every penny.

It came with all the standard burger fixings: lettuce, tomato, onion, ketchup and mayonnaise.

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The patty is made mostly of pea protein, rice protein, mung bean protein and beet juice extract for that meaty colour.

One bite in and it was clear that this burger did not taste nearly as meaty as White Castle’s Impossible slider – but I liked it better. While the meat flavour wasn’t as strong, the texture was more like a beef burger. It was juicy and buttery and felt fresh off the grill, which gave it an edge over the slider.

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Lastly, I went to a Burger King in downtown Manhattan, to try the Impossible Whopper.

The Impossible Whopper was US$7.29, a comparable price to Carl’s Jr.’s burger.

And it was easily the biggest of the three burgers.

Inside the sesame buns, the burger held lettuce, tomato, onions, ketchup and mayonnaise.

Like the Impossible slider at White Castle, the Impossible Whopper is made up of mostly soy protein, potato protein, coconut oil, sunflower oil and heme.

There was no doubt the Impossible Whopper looked the best.

It looked more like a beef burger than any of its counterparts, and the bun kept the ingredients from spilling out.

But after taking a bite, I was underwhelmed.

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While the Impossible slider tasted more like meat, and the Beyond Famous Star felt more like meat, the Impossible Whopper neither tasted nor felt particularly meaty. It gets the third place spot.

But ultimately, I was impressed by how much all three burgers resembled beef. Each one was enjoyable, and as a non-meat-eater who was once sceptical of plant-based burgers, I would definitely eat any of these burgers again.

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This article originally appeared on Business Insider.