Not sure if this helps but I just read this on a post from gourmetfoodworld.com
"Beurre de Tourage Butter, also known as “dry butter”, is dry, unsalted, presented in thin sheets, and designed for folding. It's made from imported butter from Brittany, with 82% butterfat. Designed to make laminated dough preparations, it's an exceptional butter for puff pastry, croissants, and Danishes."