flash-freeze

US /ˈflæʃ friːz/
UK /ˈflæʃ friːz/
"flash-freeze" picture
1.

freeze (food) very rapidly so that ice crystals do not form and damage the cell structure.

:
The factory uses advanced technology to flash-freeze vegetables, preserving their freshness.
You can flash-freeze berries to enjoy them out of season.