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Onion jam
Preserves

Onion jam

180 min4 serv.21 февр. 2026 г.

Description

A simple canning recipe with no unnecessary fuss. I’ll go into more detail below; the jars keep for up to a year in a cool place.

Instructions

  1. 1

    Step 1

    Step 1

    Prepare all the ingredients.

  2. 2

    Step 2

    Step 2

    Slice the yellow onion into thin half-rings. If you want a more uniform jam consistency, you can dice the onion instead.

  3. 3

    Step 3

    Step 3

    Heat butter in a heavy-bottomed saucepan. Sweat the onion for 5–10 minutes until soft and translucent. It must not brown or change color!

  4. 4

    Step 4

    Step 4

    Then add all the spices, Jerusalem artichoke syrup, sugar, and white wine vinegar. Mix everything together.

  5. 5

    Step 5

    Step 5

    Bring to a boil and simmer the onions over low heat for about 2–2.5 hours. Stir occasionally.

  6. 6

    Step 6

    Step 6

    The onion should turn golden, become soft, and all the liquid should evaporate.

  7. 7

    Step 7

    Step 7

    Transfer the onion jam to a glass jar and let it cool. The onion jam is ready.