Which of the following beers is classified as an Old Ale?

Theakston Old Peculiar is classified as an Old Ale, a style that originates from England and is characterized by its rich, malty sweetness and complex flavors. Old Ales typically have a higher alcohol content and are often aged for extended periods, which allows for the development of deeper flavors, including notes of caramel, toffee, dark fruits, and sometimes sherry-like qualities.

Theakston Old Peculiar, in particular, is a well-known example of this style that features a balance of malt sweetness and hop bitterness, along with a slightly fruity finish. Its darker color and robust body are typical of Old Ales, which differ from other beer styles like the options listed that either belong to different categories or do not have the same flavor profile or aging characteristics associated with Old Ales. For instance, Oskar Blues Old Chub is a Scottish Ale, which has its own distinct malty character but does not share the aged complexity of an Old Ale. Similarly, Sierra Nevada Pale and Victory Summer Love are representative of American Pale Ale and Kölsch-style ale respectively, focusing on hoppiness and lighter body, further distinguishing them from the rich and complex Old Ale classification.