A Breakfast King carries 34.7g of protein, more than anything else on the Burger King menu apart from the doubles, and 1.8g of salt, which is 36% of the daily limit for a 7 to 10 year old before anything else that day. The hot drinks alongside it are where the sugar sits: none of the milk coffees carry any free sugar at all, because milk sugars do not count, while a hot chocolate carries about 10g.
The 2 breakfast items range from 328.8 kcal for the Burger King Sausage Butty up to 505.5 kcal for the Burger King Breakfast King, with seven hot drinks listed alongside them. Boone separates free sugars from the sugars that occur naturally in milk, which NHS daily limits do not count, and measures every figure against the guideline for a specific age and sex rather than an adult average.