Testing Eggs for Freshness
What is the simple test involving water to check an egg's freshness?
A Float Test
What is the ideal temperature for short-term storage of eggs in the refrigerator?
Below 45°F (7°C)
What happens to the proteins in an egg as it ages?
The protein breaks down
What common kitchen ingredient can be brushed onto eggs to seal their pores?
Oil (Specifically Mineral Oil)
Define the term poaching.
Poaching is a cooking method that involves gently simmering food in a liquid, such as water, stock, or milk, at a temperature below boiling (around 160°F to 180°F or 71°C to 82°C). It is often used for delicate foods like eggs, fish, poultry, and fruit to preserve their texture, moisture, and flavor.
During the float test, what does it mean if the egg sinks to the bottom and lies flat?
The egg is fresh
What should eggs be coated with for long-term storage to prevent air and bacteria penetration
Mineral oil
What physical change occurs in the egg white as the egg ages?
The egg white gets thinner
What is the significance of sealing egg pores with oil?
To protect the egg against bacterial invasion
What does it indicate if an egg stands upright or floats in water?
An old or stale egg
In addition to coating with mineral oil, where should eggs be stored for long-term preservation?
In a cool, dark place
How does the yolk change in appearance as an egg gets older?
It becomes flatter and more prone to breaking
Besides oil, what other method can be used to seal the pores of eggs for preservation?
Using an egg varnish/ Burying in a dry substance such as sand or sawdust/ Pickling/ Immersing in waterglass
List THREE ways in which eggs can be cooked.
Frying, poaching, scrambled, boiled, baked, steamed, omelette, coddled, pickled, deviled
What physical change in an egg causes it to float as it ages?
The increase in the size of the air cell inside the egg
Why is it important to store eggs at a consistent temperature?
To prevent the growth of bacteria and maintain egg quality
What gas accumulates inside an egg over time, causing it to float during the float test?
Air
How does sealing the pores of an egg with oil affect its shelf life?
Extends the shelf life by preventing air and bacteria from entering
Besides the float test, what is another method to check the freshness of an egg by examining its contents?
Candling or Cracking the egg open to check the appearance and smell
What is the recommended time frame for consuming eggs stored in the refrigerator for short-term use?
14 days
What chemical process affects both the proteins and lipids in an egg during storage?
Degradation or Decomposition or Breakdown
Why is sealing the pores of an egg important for long-term storage?
To maintain the egg's freshness and prevent spoilage