Demisting test
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The demisting test indicates the end of the heads and start of the hearts. Relates to louching. During a run a sample is taken. It is mixed 50/50 with water. Initially the spirit will likely louche, but if the spirit clears up within a short period of time, say a minute or two, then it passes the demisting test and indicates the start of the heart cut.
External links:
- Boston Apothecary: Demisting test
- Spirit Safe & Demisting test
- Whisky Technology, Production and Marketing: Page 165: The demisting test for determining the start of hearts is presented
- ADI: Demisting Test