Cracked pot - one containing a small amount of liquid (8)
I believe the answer is:
teaspoon
'amount of liquid' is the definition.
'teaspoon' can be an answer for 'amount' (teaspoon is a kind of amount). I am unsure of the 'of liquid' bit.
'cracked pot one containing a small' is the wordplay.
'cracked' is an anagram indicator.
'containing' is an insertion indicator.
'small' becomes 's' (abbreviation - e.g. clothes size).
'pot'+'one'='potone'
'potone' is an anagram of 'tepoon'.
'a'+'s'='as'
'tepoon' enclosing 'as' is 'TEASPOON'.
Can you help me to learn more?
(Other definitions for teaspoon that I've seen before include "Cutlery accompanying a cuppa" , "Small piece of cutlery" , "Kitchen utensil able to hold about one fluid dram" , "5 ml container" , "It creates a stir" .)