Sourdough Version of Richard Bertinet's Pain aux Olive.
I recently asked TFL how to score Richard Bertinet's Pain aux Olives to achieve the effect shown in his book, Dough: http://www.thefreshloaf.com/keyword/bread-scoring-score-richard-bertinet-pains-gourmands-2006-larousse-olive-bread 
I made a version of it this weekend, and they were right: It's rolled and the scored on the vertical.
The original recipe is a straight dough: combine ingredients, bulk ferment, roll dough into a long, flat rectangle, spread with olive paste, roll up, shape roll into bâtard, proof, score on the vertical, bake.
I modified it to use a sourdough preferment (52% prefermented flour) and retardation. Day 1: Make preferment. Day 2: Make dough, bulk ferment, shape, retard. Day 3: Bake. I didn't change the quantities of the original recipe, only the methods.
How did I like it? A lot!
I wrote in my journal: "Favorite bread in the whole wide world = Olive Bread."
[Click image for larger version.]
1. Dough scored on the vertical.
2. The result after a 40-minute bake.
3. Here's a side-by-side. Bertinet's is on left. Not to scale: Bertinet's would be 1/3 the size, as he makes three small loaves out of the 875 grams of dough. I made one loaf.
4. The crumb.
3. Download a copy of the spreadsheet in Excel 2007 format . The spreadsheet is editable, so you can use it to scale quantites up or down. You can edit the orange cells; all others cells are automatically calculated from formulae.