Use the paste. Food coloring liquid will thin out the dough too much.
Food colouring is full of sugar you can use it but a small amount won't hurt
onions, turnips, radishes
Yes
No, ertyhrosine is not cancerous. It is simply a chemcal that you use when your are preparing food. It is food colouring/dye.
All sorts of food can 'use' or contain vinegar, pickled onions is the obvious along with other pickles such as beetroot, red cabbage and gherkins, many sauces use vinegar such as mayonnaise, thousand island, salad cream (UK), vinaigrette and so on, we sprinkle vinegar on food such as fish and chips, tinned salmon and tuna and vinegar is also used in many recipes.
Probably the most obvious solution is to use a bit of red food colouring!
You can use the technique called chromatography.
He bought a colouring book for his daughter.
Adding flavor would be the most important roll that onions play in food. Although any veggie can be used in veggie stock, the three basic veggies to use are onions, celery, and carrots. If you don't like the texture of onions, you can saute them in oil, take them out, use the same oil to cook your meal, and the flavor of the onions will still be there (it works great on eggs).
NO! it could be very dangerous, so please never put food colouring on a gerbil or any live animal, its a ANIMAL not FOOD.
Fondant, as you probably know, needs to be kept pliable but not too loose. Adding regular liquid food colouring tends to make the fondant too soft and adding more icing sugar just lightens up the colour. For a good intense "hot pink" you will need to get to your closest supplier of cake decorating supplies and purchase the paste food colour. It comes in a small container (which you should be able to by separately). Mix in a small amount, knead the fondant (use gloves, no one need hot pink hands) and add more food colouring until you reach your desired intensity.