quick-freeze
US /ˈkwɪk.friːz/
UK /ˈkwɪk.friːz/

1.
freeze (food) very rapidly so that ice crystals do not have time to form and damage the cell structure.
:
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The factory can quick-freeze thousands of pounds of vegetables daily.
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To preserve the freshness, they decided to quick-freeze the berries immediately after harvesting.