Where can I buy liquid cake shortening?
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I'm guessing the recipe calls for an oil ,rather than butter, so you might try a neutral oil like canola or a room temperature coconut oil . Let us know how your cake turned out. Neither of these will clash with any other flavors in your cake, so you should be fine.
I am actually looking for a high-ratio liquid shortening..... The recipe is very specific
High-ratio shortening is only available commercially. It's almost impossible to find in retail quantities.
Check out amazon you will find suppliers there