Whether you're pouring it on your pancakes or using it instead of refined sugar in baking or sauces, real maple syrup has the most wonderful flavour.

It's so expensive because to get one litre of maple syrup, you need forty litres of maple sap. Unlike the red, sticky sap we're used to seeing come out of pine trees, maple sap is very watery - 98% water, in fact. It's boiled down until it's the consistency we know and love.

In South Korea, the sap is more popular than the syrup - they call it "gorosoe", which roughly translates as "good for the bones" and it's used as a way to detox - the idea is that you sit in a warm room drinking the sap, and you sweat toxins out through your pores.