Pretty good read so far, (though I'm not an expert when it comes to these kind of stories).

The only idea I have is, maybe put a twist in there that Ms Cake later on recognizes them somehow and that she ploughed them back then. Again just off the top of my head, not sure if it would work.

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Plus taking into account how much math is needed in baking for converting recipes and calculating the ingredients when duplicating/lessening the recipes.

The setting up between the actual act and beforehand could do with a little more work. More specifically a little more realism? That would be to my opinion add to the eroticism and maybe just how oblivious Pinkie is during sex could be worked a little on. Otherwise...I WANT TO SEE THIS FACEFUCK! Some facials, bukakke? Just how far we going with this?

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Sent you a PM!

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Hehe, that's a pretty nice idea actually. Maybe a recollection back to her experimental "groupie" days? Not sure if I could input it in based on where I envisioned the story ending, but I'll for sure take a look at what the ending would be like with it in there! Next two chapters should be out in the next couple of days!