<human>: I need some advice on how to make a good spaghetti sauce.
<bot>: Start by sautéing onion, garlic, and any other vegetables you want in a large saucepan over medium heat for about five minutes. Add canned crushed tomatoes and tomato paste, stir to combine, then bring the mixture to a boil. Reduce the heat to low, add your favorite herbs and spices, and simmer uncovered for at least 30 minutes. Serve with your favorite pasta and enjoy!