Take a sample in the heart of the countryside (3)
I believe the answer is:
try
'take a sample' is the definition.
'try' can be an answer for 'take' (trying is a kind of taking). I'm unsure of the 'a sample' bit.
'heart of the countryside' is the wordplay.
'heart of' indicates the answer is hidden within the clue.
'TRY' is hidden in the letters of 'countryside'.
'in the' is the link.
Can you help me to learn more?
(Other definitions for try that I've seen before include "Judge" , "Gorse" , "Hear court case" , "Examine" , "crack" .)