HELP! My chicken pot pie filling has always come out great when I made it in my Calphalon pot. When I used a different pot, The mix came out very sour. I got what I thought was a stainless steel pot, however, the mix was still our the next day. After asking around, I understand that there may still be aluminum in the core of the bottom of the pot. If I do invest in an "all stainless steel" pot, will this still happen? I make the filling in bulk-20 quarts, then I refridgerate it in the pot overnight. The next day, I make the crusts, fill them, and freeze them. In my recipe, I use a few cups of either nonfat dry milk powder, or whole milk, along with the chicken broth. Is there anyone who knows anything about this? I am new to this website in the hopes of someone more knowledgable than me having some answers.