These ingredients, being perishable, require more contemplation than the others, which you'll almost certainly have a chance to use before they go bad. If you don't use eggs often, you can buy them by the half dozen. With milk, you ...
First off, please don't send me to those wacko milk-is-poison sites, and please don't think I'm one of those milk-is-poison wackos.
But, lately I've started to think that maybe I should not have as much milk. I really like milk and will never actually cut it from my diet ...