Instant coffee is made by grinding roasted coffee beans ... For this test, though, I chose the tin canister, which is outfitted with a pop-top aluminum seal. The initial smell is a little weird ...

For this recipe you will need a 20cm/8in loose-bottomed tart tin and a chef's blow torch ... glossy peaks form when the whisk is removed. Whisk in the coffee essence, then set the mixture aside.