How much food is sufficient for kaffarah?

السلام عليكم ورحمة الله وبركاته The Quran says that it's the equivalent of what you'd feed your family. That has been determined to be a "saa" of rice, which in turn is 1.5 Kg of rice. Is that cooked or uncooked rice? Either way, that's definitely way more food than one would usually eat in one sitting. I'd assume half a cup is what the average person would eat as a meal. That means 100 grams of uncooked rice. Even if it's one cup it would still be 7.5 times less than 1.5 Kg. So the 1.5 Kg, is that for one person, or the 10? If it's for one person, then what about the Quran where it says... >on a scale of the average of that with which you feed your own families. No one eats 1.5 Kg of rice as one meal. And finally...does a plate of spaghetti with sauce suffice? *please provide the source for your answers* Jazak Allah khair.