Sardines portugaises à l'huile d'olive à l'arôme de truffe

Portuguese sardines, pre-steamed then packed in olive oil carrying a trace of truffle aroma, an unusual pairing that lets the earthy note sit alongside the sardine's brine rather than covering it. It is a small amount, so the truffle reads as perfume rather than the main event. Mash them through a warm boiled potato and the truffle carries through the whole plate.