They are royal oak
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I can't say for sure if you are right or not. However the shape of the briquets looks to be the same as Royal Oak, and a bit different from the Kingsford I typically use...
Royal Oak and Kingsford look nothing alike
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Sorry if my statement was a bit too, hmmm, conservative in the way I approached what I meant by a bit different....
Kingsford Briquets
Royal Oak Briquets. These are what the Expert Grill briquets I got look like...
As far as looking nothing alike, I tend to differ with that opinion. I seriously doubt that the casual observer (90+ % of the population) would notice any difference between Royal Oak and Kingsford. Mostly because most folks don't care. They just want it to work. They both are little chunks of charcoal that you pour into your chimney, or set up on your grill and use for fuel when BBQing or grilling... It's not exactly rocket science.