Oh No! There's no mayonnaise left!? How on earth did that happen?
How to Survive
Well, how urgent is the situation? Can you wait until you can get to the shops? Sometimes there is just no time to spare.
OK, here's what to do. First of all, Don't Panic!
Now, do you have an egg? Good. Break the egg into a clean jar with a tight lid. Now, add the same amount by volume (or a little bit more) of your favourite oil. It seems like a lot, but it should be about right.
Pour in a tablespoon of vinegar, add a pinch of salt/pepper/mustard. The quantities of these are completely up to you. Add more or less depending on how you like it.
OK, the second bit is very important. Put the lid onto the jar and make sure it is tightly shut.
The last thing to do is to shake the jar. Keep shaking it. Get your kids involved. Everybody shake it! Shake a shake a shake a.
When it has changed into a beautiful pale colour, open the lid and see what you have.
Hopefully you will have a small amount of creamy, velvety, tasty mayonnaise.
Add a bit more oil if it is too runny.
You should have enough to last you until someone can dash out to the shops.