I don’t know if this is the right place to post, but it is food!
I don’t really get the food labels. I have packet of white fish that has 0.26g salt in, 5% of daily allowance, and it’s green. Then a packet of crisps, 0.28g salt, again 5% but red. Surely 5% is 5% regardless of the food it’s in, and should therefore be the same colour? Or am I missing something
One the % of your reference intake. That says if you eat the entire serving what percentage of your daily allowance of that nutrient you have had.
The colours give separate information. They relate to how "healthy" the food is and is based on 100g of the product, not the portion size. So for salt, less than 0.3g per 100g is green 0.3 - 1.5 is amber and over 1.5 is red. (Don't quote me on the 1.5 I'm not certain of the precise number). The boundaries are different for fat and sugar.