- Wash the potatoes without peeling them. Cut them into thick rings. Blanch them for 3 minutes, drain and set aside.
- Cut the herring fillets into pieces and the pickles in rings, peel and cut the onions into pieces.
- Put the herring, the pickles, the onions, the potatoes in the jar up to 2cm of the edge, tamping well then cover with olive oil.
- Close and proceed immediately to heat treatment, 1h30 to 150 ° C.

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Peut on réutiliser l’huile d’olive après ouverture ?