Melt the butter in a small, heavy saucepan. Add the grated lemon peel, the chopped herbs ... and then transfer to a heated bowl. Dress the pasta with the sauce and a sprinkling of Parmesan ...
Melt the butter in a deep, heavy 12-inch skillet and stir in the cream and lemon juice. Remove the skillet from the heat and keep it warm and covered. Cook the pasta in a large pot of salted ...