I was looking at baking a yet-to-be-determined-colour velvet cake, and happened upon a recipe for blue velvet cake: http://bakebakebake.livejournal.com/3342197.html
This calls for two tablespoons of food colouring! The food colouring I am most familiar with is stuff like McCormick's, which is generally measured by the drop. Generating an entire tablespoon of a single colour would probably require several packets' worth.
Am I misunderstanding something? Are the comparative strengths the same and you just need a heck of a lot of colouring to make a cake that dark? Or is the American stuff a lot weaker and I'd only need the 4-5 drops I would expect from a recipe?