This version of Berrueco Reposado has the phase "Blend Rock" on the label. The word rock certainly pertains to the rock-like surface and appearance of the bottle. I'm assuming that the term "blend" points out that this tequila is the result of blending the contents of an entire lot of barrels before bottling. This is the common practice of most factories but the Berrueco Reposado on the previous page is designated as "Single Barrel", where tequila is bottled directly from individual barrels.