Preparation Cook pasta in large pot of boiling salted water until tender but still firm to bite. Drain; reserve 3/4 cup pasta cooking liquid. Simmer cream and lemon peel in heavy large skillet over medium heat until slightly reduced, about 1 minute. Stir in peas, prosciutto, wine, and lemon juice. Simmer 2 minutes. Add pasta and cheese and toss to coat, adding enough pasta cooking liquid to moisten. Season to taste with salt and pepper.
Preparation Cook pasta in large pot of boiling salted water until tender but still firm to bite. Drain; reserve 3/4 cup pasta cooking liquid. Simmer cream and lemon peel in heavy large skillet over medium heat until slightly reduced, about 1 minute. Stir in peas, prosciutto, wine, and lemon juice. Simmer 2 minutes. Add pasta and cheese and toss to coat, adding enough pasta cooking liquid to moisten. Season to taste with salt and pepper.