The process of briefly cooking broccoli in boiling water or steam, followed by an immediate chilling in ice water, and subsequent preservation in a frozen state is a method used to maintain the vegetable’s quality. This approach involves halting enzymatic actions that can cause loss of color, flavor, and texture during long-term storage. For example, without this treatment, frozen broccoli can become mushy and develop an off-flavor.
This treatment offers several advantages, including extending the shelf life of the vegetable and preserving its nutritional value. Freezing, in general, allows for long-term storage and reduces food waste. The pre-treatment step is crucial because it deactivates enzymes that would otherwise continue to degrade the produce even in the freezer. Historically, this technique evolved as a response to the need to store seasonal harvests for consumption throughout the year.