So just look at that cigar. What do you notice? It's pretty much one of the darkest cigars I've come across. The dark brown / black tobaccos are generally sweeter, richer, and stronger. These are called maduro or oscuro. The darker leaves usually mean that the leaf itself had more exposure to the sun - maduro stems from the Latin word "maturus," meaning aged or matured. So keep that in mind - as a leaf sits on the plant longer, it gains certain flavors and strengths that are not present in other types (like claro, for example, which is a still-green young tobacco leaf that's picked and quickly dried and stoved, thereby retaining the green color of the leaf.)
Sometimes these dark leaves are added to a cigar to give it strength and flavor. Certain leaves - those with direct exposure to the sun - are called ligero. Ligero tobaccos are dark, oily, and often have extra nicotine in them. Those tobaccos are often blended with other tobaccos to create a darker, stronger cigar. There are three parts to a cigar - filler, binder, and wrapper. The filler is the tobacco that forms the body of the cigar. The binder is a layer of leaves that wrap the filler tightly and help it to keep its shape. The wrapper is a thin layer that goes on the outside. Each element has its own unique characteristics and properties. Generally, the wrapper is the most prized part of the cigar, and some of the best cigar wrappers come from right near where I grew up in Connecticut.
The Partagas Black Label is, in my opinion, one of the nicest maduro/ligero blends. Master cigar maker Daniel Nunez, who learned the trade from Ramon Cifuentes himself, spent ten years perfecting the Partagas Black Label. He took a Cuban-seed Dominican wrapper and blended both Dominican Pilota Cubano ligero fillers and Nicaraguan ligero binders.
In conclusion, this was a cigar I really enjoyed. It's strong, and perhaps best suited to summer evenings (according to my brother Dan.) This isn't an "everyday smoke", either - save a Partagas for a nice summer evening.