Pink sauce for pasta is known as "alla vodka" sauce. The cream in the sauce, when mixed with tomato paste, causes the characteristic pink or rose color.
Alla vodka is a classic Italian pasta sauce. Since it is rich with heavy cream, a little goes a long way. This tasty, rich alternative to marinara sauce combines the cream with a bit of vodka, olive oil, crushed plum tomatoes and tomato paste. The resulting sauce is mixed with spaghetti or smaller pasta shapes, such as penne, rigatoni or ziti. Alla vodka sauce can be sprinkled with Parmesan or Romano cheese for a finishing touch. Some home chefs add shrimp to the sauce and pasta for a main course.