Also known as Struise XXX Rye Quad Reserva (Bourbon Barrel Aged)
Commercial description
Up until 2013 the label always mentioned "Triple", as from 2014 (release: 2015) the word "Triple" on the label has been changed to "Quad".

Story 1: This has always been a quadrupel, but the label designer was confused by the 3 Xís and had therefore changed the name to triple, thinking it was a mistake. (source: Facebook)

Story 2: When brewed at Deca, the beer turned out a bit lighter in colour, so they called it a triple. Now that itís brewed at the Struiseís own facilities, itís more darker in colour and they call it a quad. (source: Carlo)

Either way, itís still the same recipe and should be treated as such.
Proceed to the aliased beer...

Struise XXX Rye Quad Reserva (Bourbon Barrel Aged)

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.