Hot YouTube videos: Make chocolate cake in a mug; separate salt, pepper with a balloon

A simple chocolate dessert; a quick way to separate salt and pepper, and a creative technique for a stylish hair bun: Zayna Aston from YouTube shows off a few of the most popular videos on the site this week.

Chocolate cake in a mug

YouTube's Sorted Food channel is run by a group of British guys who have been friends since they were young. Their cooking channel has become the largest cooking conversation on YouTube, with more than 4 million views every month. As the hub for everyday cooks, the channel is all about having fun and inspiring people to cook. It hosts more than 500 video recipes covering all sorts of food, cuisines and occasions, always served with a generous dose of banter.

2 tablespoons of sugar
2 tablespoons of self-raising flour
1 tablespoon cocoa
1 small egg
1 tablespoon oil
1 tablespoon milk
Teaspoon of coffee
A few chopped up chocolate chips

Cook in microwave for two and a half minutes. Let sit for about a minute. Dust powdered sugar on top

How to separate salt and pepper

This impressive party trick comes from Richard Wiseman’s YouTube channel Quirkology, where he uploads “quirky mind stuff for curious minds.” His series of videos on “Bets You Can Always Win” is immensely popular around the world, with more than 66 million views. A magician as well as a psychologist and author, Wiseman also features a mix of illusions and magic on his channel. He's just released a book on the new psychology of sleep and dreaming.

Make stylish hair bun using a sock

On the Mr. Kate channel you can find DIY tricks and style inspiration galore. Kate Albrecht is the designer and stylist behind this channel, which has more than 13 million views. Featuring design tips, style tricks and home improvement suggestions, the Mr. Kate channel is a great place to go whether you want to spiff up your living space or be inspired to do something creative.