Put yeast and sugar into stand mixer bowl fitted with paddle attachment (K-beater) pour buttermilk in and mix. Leave to bubble for 5-10 minutes
1 tsp caster sugar, 2 tsp instant yeast, 210 ml buttermilk at room temperature
Add in flour, egg, butter, salt, garlic powder and rosemary. Mix for 3 minutes on low speed.
350 g bread flour, 50 g unsalted butter at room temperature, 1 egg, 1 tsp salt, 1 tsp garlic powder, 1 Tbls fresh rosemary chopped
Tip dough onto floured surface and knead by hand or about 5-7 minutes OR leave in stand mixer, replace the paddle with a dough hook and knead for 5 minutes until dough is soft and pliable like fat thighs
Spritz dough with olive oil and proof in warm place for 90 minutes or until double in size.
1 tsp olive oil
Prepare the garlic butter filling- add all the ingredients to a small blender attached with a blade and mix together to form a smooth'ish spreadable butter