AY Honors/Food - Freezing/Answer Key

From Pathfinder Wiki

Template:Honor header

1. Define the following terms:

a. Blanching
Blanching is a food preparation process wherein the food substance, usually a vegetable or fruit, is plunged into boiling water, removed after a brief, timed interval and finally plunged into iced water or placed under cold running water (shocked) to halt the cooking process.
b. Quick freeze
Quick freezing is used to quickly freeze perishable food items. In this case, water contained inside the food items is subjected to temperatures well below its melting/freezing point {{inits|0°C|32°F). This causes the water inside the foods to freeze in a very short period of time.
c. Freezer burn
To make something extremely dry by keeping it in the freezer for too long.

2. What kinds of containers can be used for freezing foods?

Plastic containers work the best. Metal containers also work well.

3. What are the essential things to be considered when selecting vegetables or fruits for freezing?

First check the quality, then wash thoroughly. Make sure the fruit or vegetable has no salt (or any other freezing-preventing material) on it, then when you freeze the fruit/vegetable make sure that is is not bumped or squished.

4. How do you thaw frozen vegetables for the table? How do you thaw frozen fruits for the table?

Vegetables:
Fruits:

5. Freeze two vegetables (corn and another of your choice), then prepare and serve for sampling.

6. Quick freeze a vegetable for easy pouring.

7. Why is salt not put in vegetables to be frozen?

Because it will remove all the water and not let the vegetable freeze, thus putting it in dehydrating-like state.

8. Freeze some peaches in light syrup and also some in orange or pineapple juice. What is the reason for using ascorbic acid in the syrup and not in the fruit juice? Why is ascorbic acid used in freezing peaches?

9. Freeze one type of berry without added sweeteners.

10. Make one kind of freezer jam.

References