Crushed Peas with Feta and Scallions

Name: Crushed Peas with Feta and Scallions
Ingredients: 2 1/4 pounds peas in the pod, or 1 1/2 cups frozen organic peas or petit pois; 2 to 4 tablespoons fruity olive oil; 1/2 pound sheep's-milk feta, drained; 1/2 pound Greek-style yogurt; 1 garlic clove, peeled and minced with a little coarse salt; a bunch of scallions, trimmed and finely sliced; a large handful of mint leaves, shredded; juice of 1 lemon; coarse salt and black pepper