Mackerel and potato salad

My first Jersey Royals (80p a pound) from the greengrocer were disappointing, perhaps compromised by the terrible weather in April. At Tesco this week, the Jerseys were £2.45 for a small bag; I bought organic new potatoes, of an unnamed variety and from Israel, instead. Some might say that buying Israeli potatoes from Tesco is unsound for three reasons (political, ecological, and societal); but I go only so far as an ethical shopper. Israeli farmers have a right to earn a living, I think.

I used them for a Delia Smith-style cheats' dinner: ready-prepared smoked mackerel fillets, flaked (I like their oiliness); half a bottle of artichoke hearts, drained; half a bottle of "Greek-style" black olives, stoned; one bottled pepper, sliced. Once the potatoes (about 10 of them, sliced) had cooled, I stirred everything together with two dstsps of mayonnaise -- which I had made. Plenty for two.