How to Shape a Sourdough Sandwich Loaf 1. Pre-shape & Rest After your bulk fermentation, gently turn the dough out onto a lightly floured surface. Tuck the sides under to make a rough rectangle. Let it rest for 15–20 minutes. 2. Final Shaping (Log Shape) • Flip the dough smooth-side down. • Gently flatten it into a rectangle about the width of your loaf pan. • Fold the top third down and press lightly. • Fold the bottom third up over the top (like folding a letter). • Pinch the seam to seal. • R