how to prepare buttermilk

wanna share with u all how to prepare buttermilk..

tapi klu M...bole aje beli readymade kan..:))

cara2 dia easy jer
refer pic nun:))

1) -
susu
1 sdB cuka / lemon juice

2) -
didlm measuring cup (yg berukuran 1 cwn)
masukkan cuka

3) -
masukkan susu hingga paras 1 cwn

4) -
transfer susu ke gelas yg lebih tinggi

5) -
tggu sebentar

6) -
buttermilk dh ready