Is when you have successfully adapted a cake recipe. And you write it down. And you put it somewhere safe.
And then, when you've been craving said cake and there is a really good reason to make one, and you find a recipe that's in your handwriting. You make the recipe, thinking something seems wrong but you don't know exactly what. And when it comes out of the oven, it becomes apparent that it is nothing at all like the cake that you have been craving like crazy.
And you can't buy something similar. And when you try to find out if you wrote the recipe on the computer, you realize that you did not because your husband re organized all of your writing. In fact, his junior high papers are now mixed in with your carefully sorted-by-disk articles. Not to mention everything that you've taken hours and days and months to research about allergies and manufacturers, and...oh, yes, recipes.
And you can't just pull up a new recipe. This was converted from one that you stumbled across once that looked convertible, and took 3 tries.
You just wasted rice flour that costs $4 per pound; plus shipping. So you'll serve it to the family, who will enjoy it, but it still won't be that moist, yummy gingery cake that you've been craving and will, apparently, continue to crave until you find a similar recipe. And manage to properly convert it to gluten free/casein free/corn free. (Most gluten free recipes contain xanthan or guar gum, while guar is okay for some with corn allergies it's a major faux-pas for anyone with IBS. And why flirt with danger?)
I know the original handwritten notes are on a piece of paper I had just 2 days ago; that I used to share a different "cheese-less cheese cracker" with someone. So it has to be here somewhere. But, that doesn't make it any less disappointing.