Mix the Dough – In a large bowl, whisk together flour and salt. Add starter, water, honey, and oil. Stir until a sticky dough forms. Use a stand mixer with a dough hook or mix by hand.
Knead the Dough – Knead for 8–10 minutes in a mixer, or 10–12 minutes by hand, until smooth and elastic. The dough should feel tacky but not overly sticky.
First Rise – Place dough in a lightly oiled bowl, cover, and let it rise for 4–6 hours at room temperature until doubled.
Shape the Loaves – Gently deflate, divide into two equal portions (or one large loaf), shape into tight logs, and place seam-side down in greased loaf pans.
Second Rise – Cover and refrigerate overnight, or let rise at room temperature for 2–4 hours until dough crowns about 1 inch above the pan edge.
Bake – Preheat oven to 400°F (200°C). Brush tops with butter or oil for a soft crust (optional). Bake 35–40 minutes until golden and internal temp hits 190°F (88°C).
Cool – Remove from pans and cool on a wire rack for 2–3 hours before slicing.