How to Preserve Hazelnuts

Written by emilia lamberto
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How to Preserve Hazelnuts
Hazelnuts are high in oil and if not stored properly, may become rancid. (hazelnuts image by Witold Krasowski from

Hazelnuts are naturally found in Turkey and Southern Europe, however hazelnuts are also grown industrially in the United States on single-trunk trees that reach up to five meters in height. Hazelnuts may be eaten raw by themselves or in salads and even roasted with salt. Some individuals choose to crush their hazelnuts in order to create a flavourful powder or a crumb-topping. Because of their oily nature, Hazelnuts must be properly stored in order to guarantee freshness.

Skill level:

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Things you need

  • Air-tight container, jar or bag
  • Cool, dry area (basement, cellar)
  • Refrigerator or freezer

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  1. 1

    Put hazelnuts, still in the shells, in an airtight, odourless container, jar or bag.

    How to Preserve Hazelnuts
    Store in an airtight container or jar with a lid or a resealable plastic bag. (jars image by Tammy Mobley from
  2. 2

    Place the container in a cool, dark place like a basement. Hazelnuts with shells will remain fresh for up to two months in the basement or cellar because the shell protects the nut from direct sunlight and temperature changes.

    How to Preserve Hazelnuts
    A basement or cellar is a perfect place to temporarily store hazelnuts with shells. (cellar steps image by green 308 from
  3. 3

    Keep in-the-shell hazelnuts fresh longer by placing the airtight container in the refrigerator at 1.11 to 3.33 degrees C.

    How to Preserve Hazelnuts
    Store hazelnuts in the refrigerator to keep them fresh longer. (contents of fridge image by Christopher Hall from
  1. 1

    Put shelled hazelnut meats in an airtight, odourless container, jar or bag. If the bag or container has an odour, the shelled nuts may absorb these smells, causing a strange taste. Wash containers thoroughly beforehand to remove any odours.

  2. 2

    Store shelled hazelnuts in the refrigerator between 1.11 and 3.33 degrees C in an airtight container to keep them fresh and flavourful for up to six months.

  3. 3

    Keep shelled hazelnuts fresh even longer by placing them in the freezer inside of an airtight container. Hazelnuts stored in the freezer will remain fresh for up to one year and possibly even longer.

Tips and warnings

  • Allow hazelnuts to warm to room temperature before cooking or baking with them.
  • Hazelnuts may be substituted for peanuts in recipes.
  • Crush hazelnuts in order to create a hazelnut powder for extra flavour in meals or as crumbs for a topping to casseroles.

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