The most common and most likely answer to this crossword clue is the 6 letter word SOLERA
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More clues leading to the result SOLERA
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What does SOLERA mean?
SOLERA noun- A method of producing sherry in which small amounts of younger wines stored in an upper tier of casks are systematically blended with the more mature wine in the casks below
- A large wine cask, on the bottom tier in this system, that contains the oldest wine