Tortellini alla Panna with Prosciutto and Peas

tortellini, homemade, if at all possible . . . (my recipe and step-by-step instructions are available by a search on the blog's sidebar)

olive oil

freshly grated sea salt

good quality butter

green peas (frozen is fine, just have them thawed out)

prosciutto, chopped (or a little more if you prefer)

heavy cream

Parmigiano cheese, freshly grated

freshly ground sea salt

freshly ground white pepper

freshly ground nutmeg