Top-Secret Message? Try Lemon Juice.

Athos saw this in a magazine and had to try it. The effect was quite nifty so I thought I would share it here.

Ours isn’t much of a lemon juice kitchen so we had to go out and get some. I squeezed the juice out, strained out the pulp and seeds, gave the kids some brushes, and let them have a go at writing and drawing whatever they wanted.

The tricky bit is getting used to the idea of drawing without seeing anything. The natural response is to keep adding more juice, just in case, creating a very wet piece of work.

In any case, the result is wholly invisible. Let it dry, and if you want you can even get the kids to write over the paper to enhance the “secret message” effect.

When you’re ready to reveal the message, pop the paper into the oven for a few minutes, or run a hot iron over it. The juice will brown and become visible.
Squeezing the lemon

Squeezing the lemon

Straining out the pulp and seeds

Straining out the pulp and seeds

Brushes ready for secret writing/drawing

Brushes ready for secret writing/drawing

Athos' highly classified treasure map (ok, not really.)

Athos' high classified treasure map (ok, not really.)

Advertisements

One response to “Top-Secret Message? Try Lemon Juice.

  1. oh yes! I remember doing this as a kid 🙂

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s