Carol may have changed her recipe over time, but I like the original.
Controlling the simmer is the single most critical factor when building a dense tomato foundation that includes concentrated paste and minced aromatics. Because tomato paste contains minimal free water and high natural sugars, direct heat will quickly scorch the solids against the metal if left unattended. Brown the ground beef thoroughly in a wide skillet, pour off excess rendered fat to prevent grease pooling on the surface, and maintain a gentle bubbling action over medium-high heat while stirring every three minutes with a wooden spoon.
A thick meat sauce requires deliberate hydration management, especially when simmering for twenty-two minutes while two pounds of pasta boil in a separate pot. If the mixture loses too much steam and thickens past a spoonable consistency, incorporate reserved pasta cooking water two tablespoons at a time to restore fluidity without diluting the seasonings. Using dried herbs like oregano demands proper rehydration time in the liquids, whereas substituting fresh herbs requires doubling the quantity since volatile compounds diminish under prolonged heat.