Throw us up an old cloth there, sweetie. (5)
I believe the answer is:
sugar
'sweetie' is the definition.
(I've seen this in another clue)
'throw us up an old cloth' is the wordplay.
'throw' indicates anagramming the letters.
'up' says the letters should be written backwards (in down clue: letters go upwards).
'an old cloth' becomes 'rag' (I've seen this in another clue).
'rag' back-to-front is 'gar'.
'us' anagrammed gives 'su'.
'su'+'gar'='SUGAR'
'there' is the link.
I am not very happy about this link. It may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for sugar that I've seen before include "Basic sweetener" , "Sweet ingredient" , "rotter!" , "Sweeten" , "White or brown sweetener" .)