A coffee valve is not a tasting result
A 2026 pouch report says a one-way valve is expected to protect coffee aroma. It does not publish a tasting.
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Food and flavour
What a packaging report actually says about a coffee valve, and what it does not measure.
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The coffee-valve page quotes an expectation. It does not report a tasting.
A coffee valve is not a tasting result keeps a one-way valve's stated job separate from a measured change in flavour.