Hi, i'm from Malaysia.. I had problem with my red velvet cake this few days, it tasted a bit bitter.. Is that normal? Can anyone help me with this matter? By the way, i used a bottle of red food colouring but it turned out dark red.. :( I can't find buttermilk overhere, so I used a cup of milk with 1tbsp of white vinegar.. If we add extra vinegar, can it reduce the bitter taste in cake? I really hope anyone can give me any suggestion or solution.. thank you in advance..