Made cornbread with 2/3 corn and 1/3 freshly milled flour. Baked item turned gray after several days in refrig. Used 1/2 milk and 1/2 buttermilk. When I made all corn cornbread gray problem does not occur.
Made a drop crust for chicken pot pie with soft while wheat including buttermilk. Topping turned very gray from Sat. lunch to Sun. night.
Made pancakes with buttermilk - turned gray on inside after a day or so in refrig. Made Kamut pancakes with Lactaid Milk. Did not have a problem.
Believe the problem is with freshly milled flour and buttermilk.