Nuts

Oil

Hazelnut oil is the liquid fat expressed from Corylus kernels, prized for a sweet, toasty aroma when cold-pressed from good roasted or raw stock and for a quieter profile when refined. High oil fragrance makes it a finishing oil for salads, vegetables, desserts, and some baking—not a deep-frying workhorse. Roasted-kernel presses taste darker and more praline-like; pale presses taste greener and more delicate. Buy small dark bottles, recap promptly, and store cool. Fresh oil smells of clean hazelnuts; rancid oil smells of paint or fish. French and Italian specialty producers helped popularise culinary hazelnut oil; global gourmet trade now ships many labels. It is pure fat but remains a major tree-nut derivative for allergen labelling. Taste before dressing a delicate salad. Prefer cold-pressed when perfume is the point; refined when the fat should stay background.