Chemistry
The pastis beverages produced by Pernod Ricard will become cloudy when diluted because they are aniseed-based. These beverages contain oils called terpenes, which are soluble in an aqueous solution that contains 30% ethanol or more by volume. When the solution is diluted to below 30% ethanol, the terpenes become insoluble; this causes a cloudy precipitate to form in the solution. The same chemistry causes absinthe to go cloudy when diluted.
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