Potato focaccia with black garlic butter – Gourmet Traveller

Ingredients

• 1 tbsp dried yeast (12gm)
• 50 gm extra-virgin olive oil, plus extra, for drizzling
• 400 gm “00” flour
• 400 gm bread flour
• 30 gm ground dried saltbush (see note)
• 250 gm mashed potato, cooled
• 2 tsp fennel seeds
• 2½ tbsp rosemary
• 2½ tbsp saltbush leaves (see note)
• Black garlic butter
• 50 gm peeled garlic cloves
• 1 tbsp olive oil
• 50 gm black (fermented) garlic cloves
• 250 gm salted cultured butter, chopped, at room temperature