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[–] 5 points 2 years ago (1 child)

Mayo is basically oil, egg yolk, and depending on the brand varying amounts of vinegar.

Cake recipes often call for eggs and oil, and some will use something acidic to help the baking soda/powder activate. We're just generally not used to using an emulsified all in one ingredient.

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  • [–] 2 points 2 years ago (2 children)

    Fair enough, but how many other cake recipes call specifically for vinegar or anything containing it? I'm genuinely asking as a mystified person who doesn't bake 😄

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  • [–] 2 points 2 years ago (1 child)

    I believe buttermilk is used more commonly than straight vinegar as it's acidic. Buttermilk pancakes are fairly common if not standard in the States. You'll also find it used in breads and biscuits (the kind of biscuit that's akin to a savory scone.)

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  • [–] 1 point 2 years ago

    FWIW, Ime the primary difference buttermilk makes compared to normal milk is that the bread will hold together better. It's less crumbly and more towards chewy. I don't notice any flavor difference.

    It's interesting that acid(I assume) does that, I'm curious about the chemistry behind that now.

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