How to Make a Food Grade Silicone Mold

Silicone molds are wonderful tools for bakers and decorators to have in their baking arsenal.  They are flexible, lightweight, and can tolerate being frozen or used with high temperatures up to 400F/204C.  The problem is that sometimes it’s hard to find specific designs in stores and highly detailed designs are frequently very expensive.  The solution is to learn how to make a food grade silicone mold in your own kitchen. 

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Equipment

• Food grade silicone mold making kit
• Digital scale (or measuring spoons)
• Plastic wrap
• Object to create the mold design

Food Grade Silicone

When purchasing a silicone mold making kit, make sure to read the product description carefully to ensure the product is food grade.  I looked at many different products before purchasing this one.  Many of the available options are NOT food grade and should only be used for making non-edible designs. 

Additionally, if you use the food grade silicone to make a mold intended for use with food, only use that mold with food grade.  Do not create the mold or fill the mold with clay, plaster, wax, melted metals, etc. This will make the mold no longer food grade. 

Important Note About This Tutorial

The tutorial below provides step-by-step instructions for how to make a mold using the Silicone Plastique silicone mold making kit.  If you have purchased a different product, please use the instructions that came with the product. 

Preparing the Silicone

Start by finding the item you would like to create the mold around.  For this tutorial, I’m using an Oreo cookie, but you can use anything you want to make an impression (keeping in mind it should be a food grade item if you want to keep the mold food grade). 

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Place the item on a flat surface and cover with a piece of plastic wrap.  Then, take a small amount of the white “Part A” container and flatten it gently over the item.  We are simply trying to determine how much silicone we will need to cover the item.  Continue adding more of the white part until you have enough to completely cover the item in the thickness you desire. 

Place the white part on the digital scale to determine its weight.  Divide the amount in half and add then weigh out the blue part to be equal to the remaining white.  Make sure to keep the white and blue parts separate and NOT touching at this point.

For example, if you originally used 100g of white to cover the item, remove 50g of the white.  Then, weigh out 50g of blue.  You should now have two separate balls of white and blue parts, each weighing 50g. 

This process will work for any sized item, which is why I haven’t specified the weight that you should use when making the mold.  This will depend on the item size and mold thickness preference.  

Note on Silicone Thickness

Thick silicone molds tend to be stronger and easier to hold onto, but they are less flexible, take up more space when storing, and use more of the product.  On the other hand, thin silicone molds are more flexible, take up less storage space, and use less of the product, but they are more likely to tear or be damaged (especially on the edges). 

Combining the Silicone Parts

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Begin kneading both the white and blue parts together until a uniform color is achieved without streaks.  In the first picture you can see that most of the white has been incorporated into the blue, but there are still some areas where the colors are separate.  Keep kneading until it’s solid blue.

Your silicone has been activated and is now ready to use.  It should stay pliable for 15-20 minutes, which should be a long enough time to create the mold.  This is something you should also pay attention to it purchasing a different brand.  There were multiple products that needed to be used within a shorter duration of time and many reviewers seemed to have difficulty completing their mold in the required time. 

Press a thin layer of the silicone into the details of the item.  I used small, pea-sized pieces at a time to make sure I had pressed the silicone into all of the details (including the ones on the side since I wanted the whole cookie).  Notice in the picture how much of the silicone I have remaining on the left side after covering the Oreo on the right. 

Then, cover the item with the remaining silicone.  Make sure to cover the top and sides completely.  It’s also a good idea to check if the silicone has spread under the bottom of the item.  If this has happened, simply push the silicone back so it is no longer overlapping the bottom of the item. 

Curing the Food Grade Silicone Mold

Allow the silicone mold to cure for 60-70 minutes at room temperature.  DO NOT remove the item from the mold until the curing process is complete and the silicone is firm.  This process allows the silicone to set to that familiar “rubbery” consistency rather than the spreadable, putty consistency that was used to cover the mold. 

The mold will be ready when it does not remain indented when pressed with the edge of a coin or tool.

Removing the Item from the Food Grade Silicone Mold

Gently pull the top and bottom of the mold away from the item and then repeat with the sides.  Then, peel the item out of the mold. 

Wash the mold with soap and hot water before using.  This should remove any remaining residue from molding process.  Your mold is now ready to use!

I used my Oreo silicone mold to make Copy Cat Homemade Oreo Cookies using my Dark Chocolate Shortbread Sandwich Cookie recipe.

Leave me a comment down below to let me know what item you would like to make into a silicone mold!