 My one thing is how to sharpen a knife without a sharpener. So we've all been in this predicament before. You're in an unfamiliar kitchen, you're cooking dinner at a friend's place, and for the life of you, you cannot find a sharp knife in the entire kitchen. What do you do? Do you risk trying to cut vegetables with a knife that simply won't do the trick or do you find something that is guaranteed already in that kitchen and use it to sharpen your knife? Like I do. So let's try to cut a tomato with a dull knife. So here's the dullest knife in the kitchen. We found it, it is very dull, and if you try to cut a tomato with it, you're just gonna mash it. Every ceramic mug you can find will have this exposed rim right here, and that's what we're gonna use to sharpen our knife. So take your knife, take your mug, grip it really firmly at about a 45 degree angle. You're going to take the edge of the blade and drag it against that ceramic. Really, really firm from the hilt all the way to the tip, and we're gonna do this three times. So one, two, three, and check this out. You can actually see the carbon that the knife left. That's what's gonna make this sharp. So we did this side just now. What we're gonna do is even out that blade by doing it on the other side. So you wanna use the thickest, kinda crappiest, most standard mug in your kitchen because having these jointers here be really strong is what you're going for. Anything thin, delicate, decorative, even remotely elegant, that is not the mug you wanna use for this. To really demonstrate the sharpness of this mug knife, I'm actually gonna take down a butternut squash. Really hope this works. Oh, it does. Wow, this knife really is really sharp. Let me take this off. Can it do it? Come on, buddy. Yes, that's a sharp knife. For more culinary tips like this, check out more One Thing videos on the SpruceEats.com.