When it comes to walnuts, a common question arises: is it better to buy them in-shell or as shelled walnut kernels? Both options have distinct advantages depending on your needs, preferences, and how you intend to use them. Let’s take a closer look at each option so you can make an informed decision next time you shop.

Freshness

Storing the walnut kernel inside its shell helps keep it fresh for a longer period. The shell acts as a natural protective barrier, shielding the nut from external factors that could affect its freshness. This makes in-shell walnuts an ideal choice for those who prefer to store their nuts for extended periods before use.

Once the walnut is out of its shell, it does need a little more care to stay fresh, but as long as you take these steps, it’ll stay beautifully fresh for months and months. At the very least, walnut kernel should be kept in a cool, dry place out of direct sunlight, in an airtight container (or sealed packet) and under these conditions, it will last up to 12 months. To maintain optimal freshness, we recommend keeping kernel in the fridge or freezer (just bring back to room temperature before eating for the best flavour).

Weight comparison

In-shell walnuts typically contain around 40% kernel, though this can vary depending on the walnut variety. While in-shell walnuts are cheaper per kilogram than shelled walnut kernels, you’re essentially paying for the shell, which makes up about 60% of the total weight. For example, in a 4kg bag of in-shell walnuts, you’ll get roughly 1.6kg of actual walnut kernel.

With shelled walnut kernels, you’re only paying for the walnut kernel itself, which reduces the overall weight and shipping costs. So for a 3kg box of walnut kernel, you are getting almost twice the kernel that you would get in a 4kg bag of in-shell walnuts.

Cost comparison

You can use the ratio of 40% kernel to 60% shell to work out the best value. Using our example above, a 4kg bag of in-shell walnuts will yield about 1.6kg of walnut kernel. If we compare this with a 3kg box of walnut kernel, (using 2024 pricing), the in-shell walnuts actually work out to be slightly more expensive per 100g of kernel:

• In-shell walnuts: $3.625 per 100g of walnut kernel.
• Shelled walnuts: $3.567 per 100g of walnut kernel

In-shell walnuts are also much more expensive to post than kernel, as they are bulky and you are paying to ship the shells as well!

So walnut kernel can be a better value option, depending on the pack size you want to buy.

Convenience

This comes down to personal preference. Shelled walnuts are far more convenient because you don’t have to spend time cracking them open before you can use them. This ease of use makes shelled walnuts perfect for cooking, baking, or enjoying as a quick snack. Their accessibility is a big win for anyone who values time and effort-saving.

On the other hand, some people enjoy the challenge and the satisfaction of cracking open the shell themselves. For those who see it as a fun activity, in-shell walnuts can be a more engaging choice.

Ultimately, what walnut you purchase depends on how you plan to use it. If convenience is your top priority, then shelled walnuts are the clear winner. But if you enjoy the ritual of cracking walnut shells, in-shell walnuts may be the better fit for you. Either way, you can’t go wrong—they both offer great taste and versatility.