- 1 large onion, thinly sliced
- 1 tbs. butter, ghee or coconut oil
- 250 gr sardines in olive oil
- Freshly ground black pepper
- Sauté the onion over medium heat, stirring often, until golden and tender. Let cool.
- Place the caramelized onion in a food processor. Add the sardines with about a tablespoon of the oil from the can. Grind in some pepper. Whirl until a paste forms. Taste and add more pepper and sardine oil if necessary.