How long does it take to purge crawfish?

Chef's answer
Though seldom employed, commercial depuration, or purging, confines freshly harvested crawfish in water for one or two days without food prior to further sales.
Frequently asked Questions 🎓
Purging often occurs by vomiting just right after a meal to prevent calories absorption. Frequent trips to the bathroom or disappearing for too long after meals can be a sign that they're purging themselves. The smarter ones may use showers or running water to cover the strange sounds they make in the bathroom..
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