Thawing Procedure
1. Bring the raw material from the cold store and record it, in a timely fashion so that it is ready for processing when needed.
Experience will show how long before the start of production the block needs to be put into thawing tubs.
If frozen block is tempered for some time on pallets then remove the top layers of each pallet to ensure that the blocks don’t get “soft” in the tempering room.
It is better to put the fish into the thawing tubs with ice than to store the fish on pallets in the bags until they are semi defrostedare put into the thawing tanks.
All block should be hard frozen when they are put into the thawing tanks.
2. Remove the packaging so that only the frozen block is remaining.
3. Place the blocks in steel thawing tank, submerge the blocks in water, the water temperature is the natural tap water temperature at the beginning.
4. Stack the blocks in such a way that water can flow relatively freely between the blocks, allowing even thawing speed.
5. Once the blocks have been tempered sufficiently, still frozen, separate the individual fish carcasses from each other and add ample volumes of crushed ice into
ice into the thawing water, target thawing water temperature is 0 degrees when this stage is reached.
6. Stir the contents of the thawing tanks frequently to ensure that the fish thaws evenly.
7. Target core temperature is -1 to 0 degree Celsius prior to filleting. At all-time make sure the fish is covered with water and ice.
8. There must be a thermometer in the thawing room that the team leaded uses to verify temperature in every tub every half an hour.
The tubs should be marked in the time order they were first put in to the thawing process.
The tub with the warmest fish goes first into production, that should be the tube that has been the longest in the thawing room.