As an expert sommelier and brewer, I can confidently say that Weller 107 is not a single barrel bourbon. While it is true that each barrel of Weller 107 is handpicked and bottled individually, this does not necessarily mean that each bottle is from a single barrel.
Weller 107 is a special release bourbon that undergoes a unique aging process, resulting in nuanced variations between barrels. This means that while all bottles of Weller 107 share a similar profile, each barrel imparts its own distinct characteristics to the final product. This is what makes Weller 107 so interesting and enjoyable for the refined bourbon palate.
When it comes to single barrel bourbons, the term typically refers to a specific barrel that is bottled separately, without any blending or mingling with other barrels. This allows for a more focused and unique flavor profile, as the characteristics of that particular barrel are showcased.
In the case of Weller 107, while each barrel is handpicked and bottled individually, there is still the potential for blending or mingling of barrels during the bottling process. This means that while no two barrels of Weller 107 are quite the same, it is not considered a single barrel bourbon in the traditional sense.
I have had the opportunity to taste multiple bottles of Weller 107 from different batches, and I can attest to the fact that there are subtle variations between them. Each bottle had its own distinct flavor profile, with some showcasing more pronounced notes of caramel and vanilla, while others emphasized the oak and spice elements.
Furthermore, the packaging and labeling of Weller 107 do not indicate that it is a single barrel bourbon. Unlike some other bourbons that proudly display the individual barrel number and other details, Weller 107 simply states that it is handpicked and bottled one barrel at a time.
While Weller 107 is a bourbon that offers nuanced variations from the aging process, it is not considered a single barrel bourbon in the traditional sense. Each barrel is handpicked and bottled individually, but there is the potential for blending or mingling of barrels during the bottling process. This results in a consistently high-quality bourbon with slight variations between bottles, making it a delight for the refined bourbon palate.