Peas were grown in the kitchen gardens of the Pilgrims. This recipe, from allrecipes is a very British dish. They probably did not have any dairy animals at this time, so the butter and cream are not authentic, but there are just some sacrifices we do not need to make.
1 (10 ounce) package frozen green peas
1/4 cup heavy cream
1 tablespoon butter
1/2 teaspoon salt
1/2 teaspoon freshly ground black pepper
Bring a shallow pot of lightly salted water to a boil over medium-high heat. Add frozen peas, and cook for 3 minutes, or until tender.
Drain peas, and transfer to a blender or large food processor. Add cream, butter, salt and pepper to peas, and process until blended, but still thick with small pieces of peas. Adjust seasonings to taste, and serve immediately.