Kitchen Tips

How to Pack a Cooler like a Pro – Fresh Off The Grid

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Don’t let the summer heat get you down! We share our tips and tricks on how to pack a cooler for camping so your food and drinks stay colder, longer.

Hands reaching into a blue cooler full of ice to pick up a drink can

“How hard can it be? Just put your food in the cooler and throw ice on it, right?”

This is how we used to think about packing our cooler, that is to say: not very much. But after a miscalculation left eating questionably refrigerated food, we decided to get serious about our cooler situation.

After doing a bunch of research and trying out a couple of techniques, we’ve compiled some best practices for packing a cooler: Ways to make your ice last longer, optimal organizational strategies, and a pre-trip checklist.

By the end of this post, you’ll know how to pack your cooler like a pro!

A white cooler stacked on top of a larger blue cooler
Two of the coolers we own: a Yeti Tundra 35 and the RTIC 45QT

How to select the BEST cooler (for you)

The first step to improving your cooler performance is to make sure you have the right cooler for your particular needs.

Consider upgrading your cooler

Cooler insulation has improved dramatically over the past couple of years. If you’re using one you picked up on discount years ago, you might want to consider upgrading to a newer, better-insulated model.

New coolers feature better insulating material, better construction methods, and details like freezer-style gaskets and tighter fitting lids. These features can go a long way towards keeping in the cold.

Properly sizing your cooler

Nobody talks about this, but properly sizing your cooler is perhaps the most important factor when it comes to cooler performance. We will get into this in more detail a little later, but for optimal performance, your cooler should have an ice-to-content ratio of at least 2:1.

If you want a premium brand cooler, but due to sticker shock decide to opt for a smaller model, you will inevitably find yourself shortchanging the ice—and in doing so, ruin any performance advantage you might have gained.

We recommend getting a cooler slightly larger than you think (you can always fill the extra space with ice). But you don’t want to have to cut back on food to keep the ice ratio in line.

Our Take: This is the exact mistake we made! We initially bought a 35-quart cooler when we really should have gotten a 45-50 quart cooler.

Michael in a store looking at a display of coolers

Don’t get too hung up on brand names

Yes, cooler insulation has improved, but no one brand has a complete lock on proprietary game-changing technology. It’s a very competitive industry (valued at over 1 billion in the US alone) and there are a lot of very good products on the market.

Consider a two cooler system

Depending on your group size and your budget there’s a strong argument to be made for having one cooler for food and one cooler for drinks.

The drinks cooler is going to be opened a lot more frequently and will, therefore, warm more rapidly. Digging underneath your food to find a cold beer at the bottom is not only a hassle but a major waste of energy.

In our opinion, the drinks cooler can be a more inexpensive model or perhaps a semi-retired older cooler. When it comes to food safety, there is a greater margin of error for drinks than there is for food. A less-than-chilled beer isn’t a big deal, but lukewarm chicken is a major problem.

So if you can swing it, a two cooler system can really help your perishable food items stay colder and safer for a lot longer.

Cooler prep

The day before your camping trip, there are a few things you can do to prepare your cooler for success. This is how we prepare our cooler before a big trip.

Bring your cooler inside

If you store your cooler in a hot attic, shed, or garage, bring it inside at least a day before your trip. You don’t want to start with a hot cooler.

Clean thoroughly

If you are like us, there is a good chance you didn’t do a great job cleaning the cooler after your last trip. Take a moment now and wash it down with a disinfectant spray. One of the best ways to increase food safety is to start with a squeaky clean cooler.

Pre-chill

This step is very optional, but if you’re really trying to maximize performance, consider pre-chilling your cooler with cold water and/or sacrificial ice a few hours prior to your trip. Dump this ice/water mixture right before you’re ready to start packing the cooler and then reload with fresh ice. This step will chill the interior of your cooler, so it starts off freezing cold.

Watertight containers of food stacked on a refrigerator shelf.

Food prep

The prep work you do here will make the rest of your camp cooking experience so much easier and enjoyable. Here is how we prepare our food before it goes into the cooler.

Prep food

To save space, you will want to prepare as much of your camping food at home. Pre-chop your veggies and make marinades ahead of time. Portion out condiments into smaller vessels if you don’t need the whole bottle. The less space the food takes up in the cooler, the more room there is for ice.

Remove excess packaging

Store packaging takes up a lot of extra space and usually isn’t watertight— so remove what you can. There’s no need to bring a whole carton of eggs if you only need six. Likewise, you don’t need the cardboard box that comes with a six-pack of beer. It’s just going to get soggy and need to be thrown out at camp.

Transfer to watertight containers

Another reason to remove store packaging is that it’s usually not resealable. Assume everything in your cooler is going to get wet (because it will). So unless you want your half-opened packet of hot dogs floating around, we suggest transferring everything into reusable, watertight containers.

Freeze what you can

For longer trips, you will want to freeze as much of your food as possible. Obviously, don’t freeze food you’ll need to eat on the first night (or food that shouldn’t be frozen like eggs, dairy products, mayo, etc)

But any meat that isn’t going to be used on the first day can—and should—be frozen. (FYI, this frozen meat counts as ice when you’re doing your 2:1 ice ratio calculations.)

Refrigerate the rest

Everything that is not being frozen should be refrigerated before being packed. That includes resealable food containers.

Nothing should go into the cooler that’s at room temperature, otherwise, you waste your ice making warm things cold instead of keeping cold things cold.

examples of different kinds of ice
Block ice, ice cubes, and re-freezable ice sheets all help to keep your food cold

Ice prep

With a little forethought, you can save a bunch of money by making your own ice ahead of time. Even if you still need to supplement with store-bought ice, it’s still worth it to make as much of your own ice as you can. Particularly block ice…

Block ice

Quite literally a block of solid ice, block ice has less surface area than crushed or cubed ice, which means it will last much much longer. While block ice is hard to find for sale, it’s very easy to make at topdeblogs.com fill up any loaf pan, casserole dish, or large reusable container with water and freeze it. Depending on the size of water you’re trying to freeze, this process can take some time, so start a day or two before your trip.

Cubed or crushed ice

If your refrigerator has an ice maker, crank it up to Party Mode and start hoarding as much as you can. Or use the old-fashioned trays. Cubed or crushed ice is great for filling in the air gaps between food containers and drinks.

Our Take: Cubed ice is also great for cocktails, but we suggest putting your drinking ice cubes in a ziplock baggie. You don’t want your VIP ice mixing with the general admission ice.

Ice or reusable freezer packs

Whether or not you decide to use ice or reusable freezer packs often comes down to trip duration and space considerations.

Weekender (2-4 days)

If you’re going out for anything less than 4 days, we’d suggest looking into using reusable freezer packs. There are some really incredible products on the market, like Dry Ice Freezer Sheets or Arctic Ice Freezer Packs, that will actually last longer than ice. Plus, everything in your cooler won’t get wet with melted water.

Week-Longer (4+ days)

If you are going to be road-tripping for a few weeks, then your best bet will be to use ice. You can drain out the meltwater and replenish the cooler with purchased ice from grocery stores, gas stations, or campgrounds.

Or—if you are going on a long trip but have the extra space, you might consider starting with reusable freezer packs, removing them after a few days, and then switching to ice if necessary.

Ideal cooler to ice ratio

When packing your cooler you should aim for an ice to content ratio of 2:1.

That means you want TWICE as much ice as you have food and drinks. To maximize food space, you can count any food that you freeze towards the “ice” part of the ratio.

Adding more ice can improve your cooler’s performance, but only up to a certain point, after which you’ll see diminishing returns.

But anything less than 2:1 and you’ll notice an exponential drop off. There just isn’t enough 32F degree material to keep everything cold.

How to pack a cooler step by step photos

Packing your cooler

When it comes to packing your cooler, there are some important orders of operations to follow. By setting up your cooler in the right order, it will not only improve the performance but make life a whole lot easier at camp.

Block ice on bottom

Begin with a layer of casserole dish depth block ice on the bottom (or frozen food items), then back in food items in the reverse order that you plan on using them. Starting with the last day’s food on the bottom, work your way up so the first day’s food is sitting on top.

Fill it up with ice

Air is the enemy. Large pockets of air inside your cooler will accelerate ice melt. Fill up as much of that space as you can with ice cubes and/or crushed ice. Ideally, there should be no “extra” space in your cooler. It should be completely filled with food, drinks, and ice.

We find that the best way to achieve this is to pack one layer of food, then a layer of ice, and repeat until the cooler is full.

Top with a reusable freezer sheet

With the cooler packed nearly to the brim, we like to place a few frozen ice sheets on top. These reusable and foldable freezer packs do a great job of trapping the cold and preventing warm outside air from spilling into the cooler when opened.

Since they are foldable you can lift one side up to access just a portion of the cooler without exposing all the ice to the outside air.

If you don’t own a freezer sheet, you could also use a damp towel.

Meal categories

If you have space, consider packing breakfast foods to the left and dinner foods to the right. That way you’re not searching all over for your ingredients when it’s time to cook.

Make a cooler map

If you have a particularly large cooler, it helps to make a quick cooler map so you know where things are located (minimizing the time your cooler is left open while you search for what you’re looking for).

A cooler underneath a picnic table with a tent in the background.

Best practices

The way you transport and store your cooler will affect the way it performs. By following a few of these best practices, you will get the most out of your cooler.

Transportation

When loading your vehicle, keep the cooler inside the car with you if possible. Avoid putting it in a hot trunk or strapped to the roof where it is apt to sit in the direct sunlight.

Keep it shaded

At the campsite, place your cooler under a picnic table or somewhere else shaded. The sun is a heat source and you’ll want to avoid direct sunlight as much as possible. Taping a piece of Reflectix to the lid can also be helpful.

Keep it closed

One of the single biggest factors in how long the ice in your cooler will last is how often it is opened and exposed to outside air temperatures. Keeping it closed keeps it cold.

Don’t drain the meltwater (except when you should)

If you are looking to extend your cooler’s “cooling” power, it is better to leave the meltwater in the cooler than to drain it. This is because water has a much higher thermal density than air, meaning it won’t change as rapidly.

However, if you plan on refreshing your ice supply shortly, there is no harm in draining the meltwater to make the cooler lighter to carry.

Cooler accessories

Here are a few of the cooler accessories we personally use when camping.

Cooler Thermometer

If you really want to know what’s going on inside your cooler, consider buying a small food thermometer and attach it inside. That way you’ll know at a glance whether food is being stored safely (temp below 40F) or not.

We stuck one of these thermometer strips to the inside of our cooler. These can read down to 39F, so we’re able to see when our cooler temperature is starting to creep into the danger zone.

Techni Ice

These are the best reusable freezer sheets we have used. They literally stay frozen for days (far longer than regular ice). They are foldable and lay flat in your cooler.

When we’re using just reusable freezer sheets, we put one or two on the bottom and one or two on the top to sandwich in the cold. This is super effective for upwards of 4 days.

Hands reaching into a blue cooler full of ice to pick up a drink can

Conclusions

So much of your cooler’s performance comes down to how to use it. While owning a high-quality well-constructed cooler will certainly help, there is a lot you can do to improve the performance of whatever cooler you own!

This post was first published on May 25, 2017, and last updated on July 27, 2021.

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