In a mixer or large bowl mix together; starter, water, and sugar.
Add in 1 egg, Sea Salt, and butter. Mix together. Slowly add in flour 1 cup at a time until dough clears the sides (could take more or less than 3 cups).
Knead by hand of using stand mixer for 4 minutes. Dough will be soft and slightly sticky (if too sticky, add a little more flour).
Roll into a ball and place in a lightly oiled large bowl flip, dough to cover both sides lightly in oil. Cover lightly with a cloth, or shower cap and let sit at room temperature. Choose either same day or next day steps.