Κουλουράκια πασχαλινά
Preheat oven to 180C degrees. Sift together flour, baking powder and salt in a medium-size bowl.
In an electric mixer, beat butter and sugar together for 10 minutes at high speed until fluffy. Add eggs one at a time, beating well after each. Mix the baking ammonia into the milk (be careful as it fizzes) and beat in. Add the vanilla and mastic and mix well.
Slowly add dry ingredients, about a tablespoon at a time, to the mixture, until a dough begins to form. Move to a lightly floured surface, and knead until a smooth dough forms. Wrap in clingfilm and rest dough in the fridge for 30 minutes.
Break off small pieces of dough and roll into skinny ropes about 6 inches long. Shape these into twists, braids or coils. Mix the egg yolks and milk to make a glaze.
Place on ungreased, lined baking sheets and brush with glaze. Bake for about 15 - 20 minutes. Cool on a rack, and store in an airtight jar or tin.