Sift together the flour, bicarb and salt. Stir in the sugar and lime zest
In a separate bowl, combine the dairy-free milk, passionfruit lime juice and oil.
Pour the wet ingredients into the dry and gently mix until combined into a smooth mixture
Pour into a lined loaf tin.
Bake at 180 degrees centigrade for approx. 30 minutes (until a knife comes out clean)
While the cake is baking, make the topping.
Combine the sugar, passionfruit juice, lime juice and passionfruit seeds to make a thick paste.
When the cake is cooked, take out of oven but leave in the tin and stab all over the top with a knife. Evenly pour over 1tbsp passionfruit juice. Leave to cool slightly
After about 5 minutes spread the sugar paste over the top of the cake and leave to cool completely.