I want to know the answer to the following question:
What is a commonly used food coloring in the United Kingdom that is banned in Australia, Japan, Norway, and the United States?
All the background I'm provided with is that "Chlorophyll, the E numbers E140 and E141, is the most common green chemical found in nature, and only allowed in certain medicines and cosmetic materials.". Is that enough to answer the question?
Answer: no