I can find 1kg bags of T55 flour but where/what can I get in a large size (15-50lbs)?
If you are in the US, and if you meant _French_ T55:
https://www.lepicerie.com/pastry-ingredients/ingredients/french-flours-traditional-and-organic/le-moulin-dauguste-pastry-wheat-flour-t55/
If you are in the US, and if you meant _French_ T55:
https://www.lepicerie.com/pastry-ingredients/ingredients/french-flours-traditional-and-organic/le-moulin-dauguste-pastry-wheat-flour-t55/