How do you blast freeze fish?
The general process for blast freezing involves pushing cold air across the fish at a very high velocity and a very low temperature. Freezers can have a variety of sizes and configurations. Some include conveyor belts or moving trays, while others can be used as long-term storage or transportation solutions.
What is the best method of freezing fish and fishery products?
Freezing is one of the most important processing and preservation methods for fish. The main freezing methods used are blast freezing, plate freezing, immersion or spray freezing. Advantages of freezing include: flesh is changed very little and there is minimal loss of quality.
What are the benefits of a blast freezer?
Blast chillers and freezers work by rapidly decreasing temperatures of food products. Rapid cooling minimizes loss from evaporation compared to a normal cool process (like within a refrigerator). In addition, rapid cooling helps decrease the size of ice crystals that form in food when it is cooled and frozen.
What can you do with a blast freezer?
The idea of this type of freezer is to very rapidly bring down the temperature of (usually) foodstuffs or fresh produce, freezing them very quickly. They are widely used in the frozen food industry for things like iced cream, pre-prepared meals and vegetables or fish.
Which freezing method is best?
Which freezing method is best?
- The fastest method for freezing is the liquid nitrogen freezer (LNF) with which most seafood products can be completely frozen in just a few minutes.
- Immersion freezers are also a very efficient freezing method.
- MK.
What is air blast freezer?
Air blast freezing is the process of taking a product at a temperature (usually chilled but sometimes at ambient temperature) and freezing it rapidly, between 12 and 48 h, to its desired storage temperature which varies from product to product (e.g. fish = −20 °C, beef = −18 °C).
Does air have a freezing point?
If your windows got really cold: about -200 Celsius or -330 Fahrenheit, then the nitrogen in the air would liquefy on your window, and at about -220 Celsius or -365 Fahrenheit, it would freeze solid, giving you a layer of solid nitrogen. The other ingredients of air freeze at intermediate temperatures.
What is plate frozen?
Plate freezing is a fast freezing method, once the foodstuff is in direct contact with two cold metallic surfaces. This process is used when the food geometry has two plain and parallel surfaces. The smaller the thickness of the food between these two surfaces, the faster will be the freezing process.
What is the difference between a blast freezer and a freezer?
The difference between a freezer and a blast chiller is that a freezer holds food at below freezing temperature while a blast chiller cools food quickly by blowing cold air over the food product and gradually dropping the temperature in the chamber.
How expensive is a blast chiller?
The Freddy blast chiller retails for $2,900, and you can head to Irinox to shop and learn more about how it works.