How Do You Easily Crack and Shell Nuts?

The safest way to crack nuts without crushing the kernel is to apply pressure at the shell's thinnest, weakest point: for walnuts that's the seam running down the middle, for hazelnuts it's the pointed tip. Aiming for that weak spot instead of squeezing the middle with brute force greatly increases the chance the kernel comes out whole.

Soaking walnuts in water for 8-10 hours before cracking softens the shell slightly and reduces the amount of shell dust that scatters when you crack it. Hazelnuts and pistachios don't need this soaking step; for them the real trick is applying controlled pressure with the right tool.

How do you crack a walnut correctly?

When cracking a walnut, position the nutcracker's jaws across the seam rather than along the shell's long axis. Pressure applied this way splits the shell into two halves and usually leaves the butterfly-shaped kernel intact. Squeeze it sideways instead and the break point becomes unpredictable, shattering the kernel along with the shell.

A walnut that has been soaked breaks into larger, fewer shell pieces, which shortens the time spent picking shell out of the kernel afterward. The soaking water should stay at room temperature — hot water makes the kernel's inner membrane stick to the shell, and then it won't separate without force.

Without a nutcracker, a walnut wrapped in a clean cloth on a flat surface can also be cracked with light, controlled taps from the blunt end of a hammer along the seam; the cloth keeps shell fragments from flying everywhere and softens the force of each tap slightly.

Why do hazelnuts get crushed when cracked, and how can this be prevented?

Hazelnut shells are harder than walnut shells, so most people apply too much force and the kernel crumbles along with the shell. The correct method is to seat the hazelnut in the groove sized for it on the cracker and apply pressure slowly and gradually, stopping the moment the shell cracks.

Without a stable cracker on hand, rubbing two hazelnuts together in your palm also works, though it crushes the kernel more often. The papery skin left on a cracked hazelnut can taste slightly bitter; toasting the nuts in a 150°C preheated oven for 10 minutes and rubbing them in a clean cloth is enough to remove it.

How do you open pistachios that have not split?

As pistachios ripen, their shells split open on their own; most of what you find on shop shelves is already partly open for this reason. Nuts that stay closed usually didn't get enough sun while ripening and resist opening by hand.

Rather than forcing these, pressing the blunt side of a knife gently against the seam on a flat surface will pry the shell open. Wedging the sharp tip between the shell halves and using it as a lever carries a real risk of cutting yourself and tends to split the kernel in two — this method should be avoided.

What mistakes are commonly made when cracking nut shells?

The most common mistake is trying to crack nuts with your teeth, which can damage tooth enamel and leaves sharp shell edges that can nick the inside of your mouth. The second common mistake is putting cracked shells in the same bowl as the kernels without sorting them — kernel fragments get lost among the shell pieces, and stray shell can end up served by accident.

The third mistake is trying to crack an entire batch in one go. Working in small batches and separating the shell each time keeps kernel and shell from mixing and reduces how much sorting is left at the end.

Once a kernel is out of its shell, leaving it exposed to air for a long stretch lets it pick up moisture and turn rancid faster; a shelled kernel loses its freshness far sooner than one still in the shell. If a large batch won't be used right away, the rest should go straight into a sealed container.