You can spin, wheel and twist, but this thing can turn without moving. What is it?

Answer: Milk

More Difficult Riddles with answers

More Difficult Riddles

You eat something you neither plant nor plow. It is the son of water, but if water touches it, it dies.
You get many of me, but never enough. After the last one, your life soon will snuff. You may have one of me but one day a year, When the last one is gone, your life disappears.
You have accidently left out the plug and are attempting to fill the bath with both taps full on. The hot tap takes 6 minutes to fill the bath. The cold tap takes 2 minutes and the water empties through the plug hole in 4 minutes. In how many minutes will the bath be filled?
You need a key to receive an answer from me. The answer you'll find is straight from your mind. What is it?
You seek it out, when your hunger is ripe. It sits on four legs, and smokes a pipe.
You should keep it as straight as can be, yet very few do. Most of the time it's slightly bent or curved. Your sadness usually causes it to bend further, but don’t bend it for too long or it may never be able to fully straighten out again. What is it?
You throw away the outside, eat the inside, then throw away the inside. What is it?
You throw me out when you want to use me and you take me in when you don't want to use me. Who am I?
You want to boil a two-minute egg. If you only have a three-minute timer (hourglass), a four-minute timer and a five-minute timer, how can you boil the egg for only two minutes?
You want to send a valuable object to a friend. You have a box which is more than large enough to contain the object. You have several locks with keys. The box has a locking ring which is more than large enough to have a lock attached. But your friend does not have the key to any lock that you have. How do you do it? Note that you cannot send a key in an unlocked box, since it might be copied.
You’ll have me at night and if you remove the first letter I denote the top, such as on a train
You'll see savory dishes in Hong Kong sizzling in these.