Nuts

Pellicle

The pellicle is the thin seed skin on kernels of the sweet tuber of Cyperus esculentus, also called chufa—not a true tree nut, rich in colour and tannin. It adds astringency around a core flavour of sweet, coconut-almond-like, and crunchy when dried. Pastry chefs remove it for pale pastes; whole-food cooks may keep it for flecks and fibre. Blanching and rub-off after light roasting are the usual removal methods. Process habits: soak dried tubers for drinks; mill for flour; not shelled like tree nuts. Botanically a tuber—important for allergy communication even when sold beside nuts. Allergen: not a tree nut botanically but label for cross-contact and personal allergy histories. Pellicle dust can stain white icings—sieve carefully. Do not eat woody shell fragments thinking they are pellicle. Some diners find skin-on kernels harder to digest; blanching is a practical fix. Home kitchens usually compost removed skins.