Nuts

Shell

The hazelnut shell is the hard woody case around the kernel. It is not food. It governs storage life, in-shell roasting, and how nuts travel through trade and holiday bowls. Home cooks crack shells for peak freshness; factories crack and aspirate them before packing kernels. Shell fragments are a dental hazard—inspect meats carefully after hand cracking. Clean shells may be composted or used as biomass; do not assume every shell is safe fuel for smoking food. Sound shells look dry and closed; holes, soft spots, or musty dust signal insects or mould. Keep shell grit out of flour mills and blenders. The edible value lives entirely in the kernel; the shell only decides how long that value survives oxygen and light. In-shell retail remains seasonal; year-round trade favours shelled kernels for chocolate and bakery.