Dictator’s solera aging system is a cascading process where younger rums are aged in oak casks and then blended with older rums. The aged rum are arranged in different flights with the oldest distilled rum on the lowest levels of the Solera. The younger rums are placed on the upper levels with the very youngest rums at the top. As the rum is pulled from the lowest barrels for bottling, the barrels are not fully emptied, and those barrels (about half full) are then topped up with rum from the levels just above. This marrying of old and new softens the fiery younger rum and provides the final blended rum with a refined smoothness and flavor not found in ordinary rums.

Dictador Insolent
For the Dictador XO Insolent in particular, the aging barrels used are pre-used oak barrels which have a significant percentage of oak obtained from Jerez Spain, as well as pre-used Port Wine Barrels. Near the end of the aging process, the barrels earmarked for the XO Insolent Rum are emptied (and the rum stored of course), and these barrels are subjected to an open flame process which caramelizes the rum soaked oak fibres on the interior of the barrel. These barrels are then refilled with the same rum allowing the spirit to draw the sweet caramelized flavours from the interior of the oak barrel.
Here is a link to the #6 Spirit in my Rum Howler Top 100 Spirits Countdown.
#6 – Dictador XO Insolent
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You may follow my Countdown list of the 100 Best Spirits here: The Rum Howler 2015 – Top 100 Spirits