I didn't have the recipe for the bread, but here is the recipe for the crust. the recipe that I have have just enough coffee for you to taste the coffee, but if you are a coffee addict, you can add anothe teaspoon, I supposed.
Ingredient:
dilute together:
1 tsp hot water
1 tsp vanilla extract
2 tsp instant coffee powder
mix together and sieve if possible:
120g all purpose flour
1/4 tsp baking powder
1/4 tsp salt
100g unsalted butter; room temperature
90g confectioner's sugar
2 large eggs
method:
1- beat the butter with the sugar until light and fluffy
2- add in the eggs, one at a time
3- mix in the coffee
4- fold in the flour mixture.
5- put into piping bag and pipe in a spiral onto risen buns that are ready to be baked
*reminder to pipe just as needed, as too much topping would overflow and be cakey, which is not the objective of the topping*
this is my aunt sakinah's recipe.