Prepare the Boiling Water. In a large pot, combine 4 quarts of water with a generous amount of salt and black food coloring. Stir well and bring to a rolling boil.

Cook the Spaghetti. Once the water is boiling, carefully add spaghetti and cook uncovered for 10 to 12 minutes until al dente, stirring to prevent sticking.

Drain and Serve. Carefully drain using a colander, shaking off excess water and transfer the pasta to serving plates while warm.

Add Sauce. Spoon either tomato or Alfredo sauce over the plated spaghetti, ensuring a good mix.

Customize and Garnish. Encourage guests to top their spaghetti with black olives, mozzarella, or zucchini for a fun presentation.