2 large, floury potatoes
陆 lemon, juice only
40驳/1陆辞锄 rocket leaves
2 tsp capers
220g/8oz tuna in olive oil, from a jar or tin (drained weight)
flaky sea salt and freshly ground black pepper
1 tsp olive oil
50驳/1戮辞锄 sun-dried tomatoes (in oil), drained and roughly chopped