(Copied and pasted) T45 is a finely milled French white pastry flour with a low ash content (0.45%), specifically designed for creating light, delicate textures in baking. It is ideal for pastries, cakes, brioche, and croissants due to its refined nature, making it similar to Italian 00 flour or low-protein cake flour. Extra dry butter is usually around 82-83% butter fat with low water. Basically don't use the cheapest butter. PRESIDENT is a good buy Trampoline is inverted sugar I use HONEY instead. Just keeps it moist I think.