QUICK REVIEW: Burger King Sourdough King

Burger King Sourdough King

What is it?

The Sourdough King is basically a slightly ritzier version of BK’s line of King sandwiches. The ingredients are all pretty much part and parcel of the usual Burger King sammich – you’ve got your flame-broiled patty, you’ve got some American cheese, and you’ve got a few strips of bacon – but the big variable is what’s holding all of it together: a toasted sourdough bun. Toss in some grilled onions and the King’s signature creamy sauce and that’s pretty much the gist of it.

How is it?

Burger King Sourdough King 3

It’s a bit of a mixed bag. The onions are pretty juicy and crispy, so that’s a plus. The charbroiled beef is as good as ever and that proprietary secret sauce (I’m thinking it’s half honey mustard and half Catalina dressing) is downright delicious.

Unfortunately, the toasted sourdough bun seems to get soggy fast, and the bacon – at least at my local BK – felt a little too chewy and flavorless.

Is there anything else I need to know?

With a fairly steep price point (the double-patty version will cost you $5.99), the Sourdough King doesn’t do a whole lot to justify its cost – indeed, it seems to be smaller than the chain’s regular Bacon King offering.

Burger King Sourdough King 2

Furthermore, the sodium content is also pretty high, so you’re definitely going to need a beverage to choke this thing down. And while very yummy, that “special sauce” is extremely greasy – better have the napkin dispenser nearby if you plan on tackling this sucker.


The Sourdough King is tasty, but it’s hardly what I would consider a L-T-O worth going out of your way to experience. The sourdough bun doesn’t add anything to the tried-and-true formula, and you could easily replicate the overall taste and flavor of the sandwich by special-ordering a regular burger — thus saving yourself a dollar or two in the process.

Honestly, this is hardly anything more than a Bacon King with toast instead of a sesame seed bun; and if such an invitation has your mouth-watering and your free hand just itching to fork over your wallet…well, that makes one of us.

On the planet.

Purchased Price: $4.99
Size: Single patty
Rating: 6 out of 10
Nutrition Facts: (Single Patty) 730 calories, 43 grams of fat, 16 grams of saturated fat, 1.5 grams of trans fat, 125 milligrams of cholesterol, 1570 milligrams of sodium, 52 grams of carbohydrates, 2 grams of fiber, 12 grams of sugar, and 35 grams of protein.

5 thoughts to “QUICK REVIEW: Burger King Sourdough King”

  1. I saw Burger King had this new sandwich and wanted to try it, but after reading your review, I’ll probably pass on it. I was afraid the bacon would be chewy….I like mine crispy.

  2. I liked this review a lot! It gave me exactly the intel I was looking for. Now I can save some real dough by avoiding the BK Sourdough. It sure looks scrumptious though.

  3. Is this sauce available on any of their other sandwhiches? That was my fav part of this one but not with the 9.70 price tag for the medium combo

  4. The burger was good. Bread tasted like toast and there was not enough sauce to even taste it.

  5. I thought the sandwich was decent. But I like the sourdough over a regular bun. But you are correct on the bacon. Kind of limp and tasteless. I definitely prefer their burgers over some of their competitors, but to me the best burger for your buck would be the butter burger….

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