The Global City Breakfast Index compiled by Bloomberg, calculates the average cost and affordability of a typical breakfast.

Researchers used one cup of whole milk, one egg, two slices of toast and a piece of fruit as the average breakfast in 129 global and regional financial centres.

Bloomberg found that the average Lisbon resident earns just under 30 euros in an eight-hour day, which means it would 11 minutes and 40 seconds to pay for breakfast.