Answer:
There was a little heart inside a little white house, which was inside a little yellow house, which was inside a little brown house, which was inside a little green house.
Sauerkraut owes its existence to this head
What is round, has a twin, and sees more than most?
I'm very tempting, so it's said, I have a shiny coat of red, and my flesh is white beneath. I smell so sweet, taste good to eat, and help to guard your teeth.
Patch upon patch, without any stitches, if you tell me this riddle, I'll give you my breeches.
I’m grown from darkness but shine with a pale light. Very round I am and always a lady's delight.