Mix warm water with yeast & oil. In another bowl, combine flour, rosemary & sea salt. Slowly add the water mix into the flour mix. Kneed well for a few minutes & cover with a towel in a warm spot.
When dough has risen to twice it's size (approximately 1 hour), remove and divide into four portions. Preheat oven to 200 Celsius.
Roll out each portion and twist two pieces together into a plait. Place on to a floured oven proof tray. Brush with a little olive oil.
Place into oven and ensure that there is room for the dough to rise. It should take 20-30 minutes, but check with a skewer if unsure.
Remove from oven and place on cooling rack. Brush with butter if so desired. Now it's ready to serve with any dips you like!