First time with jelly

I was colouring some Aran organic merino with food dye but didn't have any blue.
My eldest son mentioned the jelly (given to us by friends). I used the berry blue. I didn't realise he meant he wanted me to make it for him to eat...not colour the wool.
I used vinegar instead of cirus acid this time. It smells. The colour to me appears more generic and bright.