Pastry recipe initially gets support (4)
I believe the answer is:
pier
'support' is the definition.
(pier is a kind of support)
'pastry recipe initially' is the wordplay.
'pastry' becomes 'pie' (pie is a kind of pastry).
'initially' indicates taking the first letters.
The initial letter of 'recipe' is 'r'.
'pie'+'r'='PIER'
'gets' acts as a link.
(Other definitions for pier that I've seen before include "Seaside attraction" , "Supporting structure" , "Load-bearing pillar" , "Landing-stage or promenade" , "seaside location" .)