Silicon dioxide, though, the main ingredient of glass, created something more astounding: aerogel, the lightest solid in the world.

They spent a year sourcing ingredients, including quinine, tonic's main ingredient, from the cinchona, the so-called fever tree.

Raisins are the main ingredient here, followed by glucose syrup — a type of sugar, while apricots make up 6 per cent of the total weight.

The main ingredient is ephedrine or pseudoephedrine, found in regular cold and flu medication.

The main ingredient is whey powder, a by-product of cheese making, followed by vegetable oil, milk proteins and emulsifying salts.