can you freeze runner beans without blanching them first

As with most vegetables, runner beans need to be blanched before freezing to help retain their fresh flavour and colour.
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1 Bring a pot of water to a low boil. Heat the water until it just begins to bubble

Freezing Green Beans Without Blanching Them First! – Garden Harvest Preservation

then adjust the temperature to keep it constant. You want the blanching water to be hot enough to hydrate and soften the runners