2 pounds small new or fingerling potatoes (I used a mix of reds and yukon golds)
1 pound asparagus
1/4 pound sugar snap peas, green beans or other spring pea
4 small-to-medium radishes, thinly sliced

Pickled spring onions
3 spring onions (about 6 ounces)
1/4 cup white wine vinegar
1/4 cup water
1 tablespoon kosher salt (I use Diamond brand; use less if you’re using Morton or table salt)
1 1/2 teaspoons sugar

Sharp mustard vinaigrette
1/4 cup olive oil
2 tablespoons whole grain mustard (both Roland and Maille make a whole seed one I’m tremendously fond of)
2 teaspoons smooth Dijon mustard
2 tablespoons white wine vinegar
Salt and freshly ground black pepper to taste