You’ve heard that phrase, right? Use it or lose it? It’s true, you know. Don’t worry if you don’t believe me; it just means that you’re under the age of 25. And at the wizened—er, wise—age of 27, I can tell you with conviction that you’ll soon understand exactly what it means.

This photo below, for example. I made this sandwich three weeks ago, tops. It’s a vegetarian version of a BLT, using grilled BBQ tempeh in place of the bacon, spinach instead of lettuce, plus cheese.

I was going to do a blog post about it, extol the virtues of my grill pan, and try to make your most likely meat-loving mouth water at the sight of tofu. And of course, give you instructions for how to recreate the yummy.

That’s when I made the fatal error. Instead of writing down the sandwich instructions—I mean, seriously, it’s a faux BLT, how hard can it be to remember? —I snapped the photos, and saved them to my computer for a rainy blog day.

And so, here we are. And no matter how hard I squint at my screen, bite my tongue, and make my totally unattractive “what the…?” face, I can’t retrieve the memory of what cheese I used. I can see from the photo that it’s melty like Cheddar or Swiss, but…I’m running through our past few Whole Food trips in my mind, and I can’t say for sure.

Any guesses? If so, for heaven’s sake email them to me, don’t tell me in person. I’m clearly in need of a paper trail.