I was just wondering of anyone encountered the same problem as me. For the past 2 cakes I made, I realised that after adding food colouring to my buttercream, and after mixing everything thoroughly, I still find some specs of colour in my cream. It's like many small dark coloured specks in the cream.
FYI, I used gel food colouring and IMBC.
Did I not mix it thoroughly enough or should I use liquid colouring?