Maybe it's the fact that the temperature hit 90 degrees on Easter. Or that it seems I haven't needed a coat in weeks. Or that our chive plants in Portsmouth were flourishing in March.
The night before, we'd rotisseried a couple of chickens outside on our Weber grill -- so there was cold chicken in the fridge. And we'd spent the morning at one of the last of the Seacoast Winter Farmers' Markets, so we had fresh greens from Heron Pond Farm for a salad. What could be a better accompaniment to an April alfresco lunch on the deck than a homemade potato salad? There was only one hitch: I knew the potatoes we had on hand were Adirondack Reds, the pink-fleshed relatives of the blue potatoes I wrote about last time. I wondered: could potato salad be pink?
The answer would probably have been "no" if I'd been thinking about the traditional American mayonnaise-based version. But I'd spent the past year or so trying to replicate the potato salad from Karl's Sausage Kitchen on Route 1 in Saugus, which with its vinegary, oniony taste, is my current gold standard. Sure, I could probably ask Karl's for their recipe, but then I'd miss all the fun of trying to figure it out myself.
Here's what I've come up with so far: first, onions should be minced, not chopped. Second, in order to get as much flavor into the potatoes as possible, I sprinkle a healthy amount of salt into the cooking water. (Is there such a thing as a healthy amount of salt?) Third, as soon as the potatoes can be handled after cooking, I slice them (leaving the skins on, because there are lots of nutrients there) and put them into some champagne or white wine vinegar, mixed with a little white wine. If I've minced the onions in the food processor, which I usually do for this, I also pour in the onion juice, frequently adding a little prepared horseradish as well. You'll have to rely on taste here, rather than a recipe, as much will depend on how pungent the onions are as well as the sharpness/sweetness of your vinegar.
The hot potatoes will absorb this mixture, so once things have cooled down a bit, I give it all a taste -- this will help me decide how to make my viniagrette dressing. Are things too puckery bitter? I may want to add a little sugar. Too bland? Maybe a little dijon mustard, another pinch of salt, and some more horseradish. Once those decisions are made, I add the onions, dress the potatoes with a bit of my viniagrette, to which I've added only enough oil to give it body, plus a few twists of freshly ground pepper, and a big handful of those chives that started it all.
You can eat this potato salad warm or cold, but I like it chilled just a little bit, so the flavors have time to meld. Now, don't you agree: there's nothing like pink potato salad served with cold chicken on a plate of greens to make you think summer.
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