Ingredients

1/4 cup mayonnaise 

1/4 cup sour cream 

1 tablespoon white wine vinegar 

Coarse salt and freshly ground pepper 

1 pound frozen peas (do not thaw) 

1/2 small red onion, halved lengthwise and thinly sliced (1/2 cup) 

1/4 cup packed fresh flat-leaf parsley leaves 

4 ounces bacon (about 4 slices), chopped 

2 ounces aged white cheddar, shaved or coarsely grated 

Preparation

Whisk together mayonnaise, sour cream, and vinegar in a large bowl; season generously with salt and pepper. Fold in peas, onion, and parsley. Refrigerate at least 4 hours.

Meanwhile, cook bacon in a large skillet over medium heat until browned and fat is rendered, 8 to 10 minutes. Transfer to paper towels to drain and crisp.

Let salad stand at room temperature for 10 minutes. Gently fold in cheddar and bacon just before serving.