How to make Natural Slime or Oobleck

Natural Slime

Because this slime recipe uses only natural ingredients, it is unlikely to cause any skin irritations, but it is likely to have your child thinking, ‘I wonder what would happen if I put my whole body into the slime?’ The results are brilliant, but the clean-up is more than a quick wipe with a sponge. Be prepared for this to turn into a full-body experience. At the very least, have a clean towel ready; you will need it when they’re done. The hose might come in handy, too. Don’t say we didn’t warn you!

How to make Natural Slime or Oobleck

Set-up time mid
Clean-up time high
Mess factor high

You will need:
A large bowl

Food colouring

1 cup warm water

2 cups cornflour

Dishwashing liquid (optional)

A whisk for mixing

A large tray or trough in which to play with the slime

Spoons, whisks, funnels,

Sticks, hands…

What to do

1. In the bowl, mix the colour and the warm water, or, if using homemade colour, heat the food colouring without adding water. You can make the slime using cold water or cold food colouring, but the cornflour will be clumpier.

2. Slowly add the cornflour, mixing and blending as you go. If it’s too runny, add more cornflour; if it’s too firm, add more water. If you want the mixture to be a little more slippery, or you’re hoping to give your patio or verandah a thorough clean when tidy-up time rolls around, then add in a little squirt of dishwashing liquid (too much will cut through the slimy qualities and leave you with a sloppy mess). You should be left with a substance that looks like a liquid but is firm to the touch.

3. Turn out your blob onto the tray or trough and let them at it. Drive cars through it, submerge animal figurines in it, mix it with sticks or attack it with cooking utensils.

This slime recipe looks way worse than it is. It dries hard and floury, so if they traipse it through the house, just wait for the mess to dry and vacuum it up. Outside, just set the hose on it – and your kids.

Reproduced with permission from Recipes for Play by Rachel Sumner and Ruth Mitchener.

Rachel Sumner describes herself as a play-at-home mum of Margaux (four) and Frankie (two and a half ). She has been a children’s book rep for retailer Beattie Forbes and while living in Blenheim, she spent 12 months as the children’s book reviewer for the Marlborough Express. She is currently a book reviewer for the Australian Women’s Weekly.

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