This is the BBA basic sourdough to which was added 2 diced granny smith apples, 4 oz of toasted walnuts and 3 oz of small-dice parmesan and asiago cheese. The starter was KA New England that had been fed 50/50 with KA bread flour and home-ground hard red wheat. The final flour addition was 15% WW, 5% Rye and 80% KA. It got a stretch-and-fold at 15, 45, 90 and 120 minutes, then proofed for another 3 hours. The final shaped loaves proofed a little over two hours before being glazed with egg yolk and baked. Baking time was a total of 45 minutes to get the internal temp up -- I'm sure there was a lot of moisture from the apples. It's yummy. Yes, it really is slightly purple (from the walnuts I believe).