The Essential Guide to Freezer Blocks: Keeping Your Food Fresh on the Go

How Do They Work?

At first glance, a freezer block is just a sealed plastic container, but the magic lies inside. Rather than just holding plain water, they are filled with a specialised, non-toxic coolant gel.

This gel is designed to freeze faster than regular water and, more importantly, thaw at a much slower rate. This means the block retains its low temperature for hours, gradually releasing the cold air into your cool bag to keep your food fresh without any watery run-off.

Top Tips for Maximum Cooling

To get the absolute best performance out of your freezer blocks, it is all about how you pack them. Cold air naturally sinks, so tossing a block at the bottom of your bag isn't always the most effective method.

• The Layering Technique: For larger cool boxes, place one layer of freezer blocks flat across the bottom, add your food and drinks, and then place another layer of blocks directly on top. This creates a fully chilled environment.

• Freeze Flat: Always try to freeze your blocks perfectly flat. This ensures the gel is evenly distributed, which maximises the surface area for cooling and makes them much easier to stack inside tight lunchboxes.

• Pre-Chill Your Bag: If possible, keep your cool bag in the house (or even the fridge) rather than a hot car boot before packing. Starting with a cool environment helps the blocks last significantly longer.

• Chill Your Food First: Freezer blocks are designed to keep things cold, not to chill warm items. Make sure your drinks and food come straight from the fridge before packing them in the bag.

Built to Last

One of the best things about hard-shell freezer blocks is their longevity. Unlike single-use ice bags, these heavy-duty plastic blocks are completely reusable. Once your picnic is over, simply wipe them down with a damp cloth and pop them straight back into the freezer so they are ready for your next trip.

Ready to upgrade your picnic gear? At Shophut.co.uk, we stock high-quality, leak-proof freezer blocks in a variety of pack sizes to suit everything from small lunch bags to large family cool boxes. Grab a set today and never eat a warm sandwich again!