Gouden Carolus Grand Cru of the Emperor

Also known as Gouden Carolus Cuvée Van De Keizer Blauw
Commercial description
"Grand Cru of the Emperor is brewed once a year, on the 24th of February, on the birthday of Charles the Fifth." Brewed in limited quantities, this classic Belgian Ale, is an adaption of the Gouden Carolus Ale and is made to age.
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Gouden Carolus Cuvée Van De Keizer Blauw

The brewer markets this same or near-same product by more than one names. This can be the result of a brewer distributing this beer under different names in different countries, or the brewer simply changing the name, but not the recipe at different points in time.