Möbius strip

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Möbius strip: the mindbending shape with only one side.

It's very simple to create: take a long piece of paper, give one end a 180-degree twist and then stick the ends together. The simple shape just created has only one side. What??

You can test this by running your finger over the surface and you'll cover the entire shape and end up back where you started.

Try to follow the red ball in the animation as it follows the surface over the entire loop.

Möbius strips have a couple of other interesting properties including how cutting them in half down the middle simply makes a longer loop, and cutting a third of the way in over the full length will reveal two distinct yet interconnected loops. Fun to try!

I once spent a memorable evening with a friend trying to feed a Möbius strip through a regular printer to see if we could print on both sides in one go.

In case it's handy, here's a static Möbius strip sketch

Published 6 Mar 2022

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While travelling in Southeast Asia, I was in awe of the open-air kitchens of street-food restaurants. Just by wheeling out a few carefully stocked trolleys and some prepared ingredients, one person was able to run a bustling street-side restaurant serving a score of customers delicious, fresh-cooked food each night. It's a remarkable feat of ingenuity and efficiency. We had a delicious meal from an old lady in Vietnam who'd just carried her entire restaurant on a bamboo pole over her shoulder, with two large baskets at either end. The pole held everything necessary to cook, including several small stools to sit and eat on. What Makes Street Food Open-Air Restaurants Work? Some of the attributes I noticed about the best ones: Menus with Prices you can see from a Distance We made part of the decision about whether a place looked good to eat at as we approached a stand. A clear menu with large prices you can see as you walk up is a simple way to slow down the right customers before they've walked past. Fresh Ingredients on Display Seeing the fresh ingredients at the front of the stall builds trust in what you're about to eat and whets the appetite. Pre-chopped Ingredients and Giant Rice Cooker Having boxes of pre-chopped ingredients to throw in makes cooking super speedy, and as so many dishes were served with rice, a single giant rice cooker enabled preparing meals in moments. Trolleys on Wheels and Everything Within Reach Having everything on wheels allows quick and easy deployment and packing up, and a chef can adjust each unit to have everything in easy reach. Carefully Chosen Kit A single high-powered gas stove with a large wok cooks nearly all the dishes Trolleys stacked with plates, bowls, cups and utensils A waste bin handles scraps and excess liquids A multi-use towel wipes surfaces and hands Why Isn't Street Food Like This Everywhere? It helps to have the right kind of weather. A warm and generally dry climate means you don't need to rent indoor space, heat it or cover it. This enables so much creativity with food, reducing prices and barriers to entry and increasing selection. Alas, I'm in the UK for this one. It also suits food that is quick and simple to cook, often using pre-prepared, flavourful sauces and fresh ingredients that cook quickly, as opposed to dishes that require long preparation, ovens, or simmering times. Thai and Vietnamese food, in general, lend themselves well to this. It's remarkable how these simple yet effective setups can spin up a restaurant at the side of the street, turning a few trolleys, some carefully chosen gear and a talented chef into a culinary treat. Related Ideas Also see: Hedgehog a mango Cut an onion into teeny pieces Deseed a pomegranate Open a coconut Arrange kitchen storage to minimise excess travel Learn kind words first The kitchen working triangle 3 miscellaneous cooking tips And all sorts of other food and drink sketches…While travelling in Southeast Asia, I was in awe of the open-air kitchens of street-food restaurants. Just by wheeling out a few carefully stocked trolleys and some prepared ingredients, one person was able to run a bustling street-side restaurant serving a score of customers delicious, fresh-cooked food each night. It's a remarkable feat of ingenuity and efficiency. We had a delicious meal from an old lady in Vietnam who'd just carried her entire restaurant on a bamboo pole over her shoulder, with two large baskets at either end. The pole held everything necessary to cook, including several small stools to sit and eat on. What Makes Street Food Open-Air Restaurants Work? Some of the attributes I noticed about the best ones: Menus with Prices you can see from a Distance We made part of the decision about whether a place looked good to eat at as we approached a stand. A clear menu with large prices you can see as you walk up is a simple way to slow down the right customers before they've walked past. Fresh Ingredients on Display Seeing the fresh ingredients at the front of the stall builds trust in what you're about to eat and whets the appetite. Pre-chopped Ingredients and Giant Rice Cooker Having boxes of pre-chopped ingredients to throw in makes cooking super speedy, and as so many dishes were served with rice, a single giant rice cooker enabled preparing meals in moments. Trolleys on Wheels and Everything Within Reach Having everything on wheels allows quick and easy deployment and packing up, and a chef can adjust each unit to have everything in easy reach. Carefully Chosen Kit A single high-powered gas stove with a large wok cooks nearly all the dishes Trolleys stacked with plates, bowls, cups and utensils A waste bin handles scraps and excess liquids A multi-use towel wipes surfaces and hands Why Isn't Street Food Like This Everywhere? It helps to have the right kind of weather. A warm and generally dry climate means you don't need to rent indoor space, heat it or cover it. This enables so much creativity with food, reducing prices and barriers to entry and increasing selection. Alas, I'm in the UK for this one. It also suits food that is quick and simple to cook, often using pre-prepared, flavourful sauces and fresh ingredients that cook quickly, as opposed to dishes that require long preparation, ovens, or simmering times. Thai and Vietnamese food, in general, lend themselves well to this. It's remarkable how these simple yet effective setups can spin up a restaurant at the side of the street, turning a few trolleys, some carefully chosen gear and a talented chef into a culinary treat. Related Ideas Also see: Hedgehog a mango Cut an onion into teeny pieces Deseed a pomegranate Open a coconut Arrange kitchen storage to minimise excess travel Learn kind words first The kitchen working triangle 3 miscellaneous cooking tips And all sorts of other food and drink sketches

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