What materials would be present in an agar medium used to grow microorganisms?

what materials would be present in an agar medium used to grow microorganisms?

What materials would be present in an agar medium used to grow microorganisms?
Firstly agar - a seaweed extract, to make it set (like gelatine in jelly). Then anything from beef extract , sugar, starch, to dried blood - depends what you want to grow on it.
Reply:very little sugar%26amp;sterile water