A while back, I found a recipe for making cold porcelain which called for glycerine. I thought it would make a cool project to share with you guys, however I couldn’t find glycerine anywhere local. Fortunately, I found an alternative, for making air-drying clay. I strongly advise using an old saucepan and spoon for this; even thought the clay is water soluble after cooking and before drying, you probably don’t want to risk it fouling things you eat out of.

Please remember these are INEDIBLE. While it may not do you any harm, eating this will probably make you incredibly sick. Do Not Eat!


  • 1 cup bicarbonate of soda
  • 1/2 cup cornflour
  • 3/4 cup water


Mix all the ingredients together in the saucepan and cook over a medium heat, stirring consistently, until it forms a thick paste that is too thick to continue stirring. Remove from heat and allow to cool until the dough is touchable. Kneed dough for around 5 minutes, or until the dough is smooth.

I decided I wanted to make some Christmas ornaments as a cheap, personalized, present, so I rolled the dough out to about 0.5 cm thickness and used cookie-cutters to make star, heart, candy-cane and snowman shapes. The recipe states that after moulding, the clay will take 1-2 days to dry and harden. I am impatient, so I put mine in the oven, on the bottom shelf at 50°c for 2 hours, checking on them every 15 minutes. This is them, halfway through the drying process.

Inedible clay ornaments

Thinking they were ready I took them out and put them on a cooling rack while I got on with another project. However, the thicker ones still felt slightly squishy at 1500, so I put them back in the oven for another hour and 15, then left them out for another half hour. Total drying time: ~4h10m. Below is the ornaments completely dry.

dried inedible clay

When they were firm to the touch I used acrylic to paint them. As you can see I’m an awful artist, and these are only half done. I’ll paint the other sides as well, and put family member’s names on them.

painted clay

Despite the long drying time, the clay was super easy to make, and could be used for any number of things. Painting only added another hour or so. This was easy and fun, I totally recommend trying it.

If you have a suggestion of what I should make next, send an email to dru@g3-radio.net, or leave a comment. Liked this post and want more? Check out all the Cooking With Dru posts, and be sure to keep an eye on our Youtube channel for the making-of videos.

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