Tesco Finest Traditional Porter

Also known as Harviestoun Old Engine Oil (Bottle)
Commercial description
A wickedly viscous, rich smooth dark ale, with a dominance of chocolate and coffee flavour, enticingly balanced by the bitterness of hops. Leaving a lingering bittersweet aftertaste to savour. A modern twist on a 19th century classic, brewed at the Harviestoun Brewery, Scotland.
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Harviestoun Old Engine Oil (Bottle)

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.