A. That’s because our milk comes frozen, or we freeze it when we get it, because we don’t get it often enough, and we didn’t thaw this bottle long enough.
Why does our milk come frozen? That’s because we keep an additional Kosher Dairy stringency called “Chalov Yisrael” and it isn’t readily available at Price Chopper (though there’s a limited supply at the Kosher Price Chopper in Colonie), Stewarts or Outtakes. It comes once-a-week from NYC and we thaw a bottle a day, since our kids love cereal and milk.