Creamy Tomato Alfredo Linguine

linguine (any other pasta is fine and fresh is ideal since sauces cling better to fresh pasta)

kosher salt

olive oil

garlic, chopped finely

shallot, chopped finely

Italian plum tomatoes (preferably San Marzano) with liquid

kosher salt and freshly ground black pepper

red hot pepper flakes (the amount depending on how hot you like it)

fresh or frozen peas (optional)

heavy cream

sliced prosciutto (optional, but taste it before buying if using; you don't want it too salty)

unsalted butter

freshly grated Parmigiano-Reggiano or freshly grated Parmesan cheese

chopped fresh Italian parsley (optional)