Blunt knives are dangerous in the kitchen. If you don’t have a knife sharpener or you’re not confident in using one, there is a way you can sharpen your knives using just an ordinary mug.
Simply turn the mug upside down and you will see the raw porcelain at the bottom. The graininess of this is what will sharpen your knife. Hold the knife at a 30° angle and run the blade a few times on each side.
We think this idea is great for camping or caravanning trips when you won’t have access to a knife sharpener.