Preheat oven at 180°c, prepare baking tin size 8, sieve the flour

Beat margarine and sugar until fluffy, add the oil and continue mixing

Add in the eggs one at a time.,add the passion fruit pulp plus flavour, Add the flour and buttermilk and mix in well but don't over mix

Pour into the baking tin and bake for 40+50 minutes, middle rack until ready

Cool down with a couple of hours, frost with whipped cream.