Weigh all three ingredients into a large bowl or the bowl of your stand mixer if you have one.
Beat the ingredients together until you have a smooth paste.
Transfer the paste to a clean, sterilised jar.
Notes
You can use butter instead of shortening for your DIY cake release if you prefer. I choose to make mine with shortening because it is top 14 allergen-free and so I can use the one mix across all my bakes rather than having to make a separate batch for any dairy-free / vegan baking I am doing.
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