how many grams in a teaspoon of hazelnuts?

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things people ask

• When would a recipe call for hazelnuts by the teaspoon?
  Almost always when finely ground or pulverized — a teaspoon of hazelnut meal stirred into a brown butter sauce for ravioli, sprinkled into a vinaigrette with sherry vinegar, or worked into a brittle base. Whole hazelnuts at the teaspoon scale (roughly two nuts) are too large to call out by spoon; recipes specify them by piece count instead.
• How much ground hazelnut equals one teaspoon?
  About 2-2.5 g for finely ground hazelnut, slightly less than the 2.96 g for whole nuts because grinding releases some oil and changes how the particles settle. For a chocolate ganache or a Romesco-style sauce where hazelnuts are one of several thickeners, a teaspoon of meal is enough to register on the palate without taking over.
• Can I use hazelnut oil instead of ground hazelnuts at the teaspoon scale?
  Sometimes. A teaspoon of hazelnut oil (about 4.5 g) carries concentrated roasted-nut flavor and works in dressings, drizzles over squash soup, or finishing a fish dish. But it brings no texture — if the recipe relies on the meal for body, like a brittle or a praline accent in a sauce, the oil isn't a substitute. Use it where flavor alone is the goal.

related conversions

• Hazelnuts: cups to grams
• Hazelnuts: tablespoons to grams
• Hazelnuts guide