Tourage (Lamination Turns)

Tourage is the systematic process of folding and rolling laminated doughs — puff pastry (pâte feuilletée) and croissant dough — through a series of turns (tours) that progressively multiply the alternating layers of dough and butter into the hundreds, creating the architecture of flaky, shattering pastry. Each turn is a precise geometric operation: the dough is rolled to a uniform rectangle, folded according to a specific pattern, then rested under refrigeration before the next turn. Two types of turn are used: the tour simple (single turn or letter fold), where the dough is folded in thirds like a business letter, tripling the layers; and the tour double (double turn or book fold), where both short ends are folded to the centre, then the dough is closed like a book, quadrupling the layers. Starting from the enclosed butter block (1 layer of butter between 2 layers of dough = 3 layers), the progression is: after 1 single turn = 9 layers, 2 singles = 27, 3 singles = 81, 4 singles = 243, 5 singles = 729, 6 singles = 2,187. For classical puff pastry, 6 single turns (2,187 layers) or 2 doubles + 1 single (768 layers) are standard. For croissant dough, which contains yeast and must remain sufficiently open for fermentation gases to expand, only 3 single turns (27 layers) or 1 double + 1 single (36 layers) are used — too many layers compress the croissant into a biscuit rather than the honeycombed interior. The butter must be the same plasticity as the dough throughout: too cold and it shatters inside the dough, creating discrete chunks rather than continuous layers; too warm and it oozes through, merging with the dough and destroying the lamination. The ideal working temperature for both is 14-16°C. Between each turn, the dough rests in the refrigerator for 30-45 minutes to relax the gluten (which has been stretched by rolling) and to re-firm the butter. The rolling must be firm but even, always rolling in the direction of the length (never diagonally, which distorts the layers), using light flour and scraping the surface with a bench scraper to maintain a clean rectangle.

• Danish pastry lamination
• Turkish yüfka rolling
• Austrian Blätterteig technique