I never did find it yesterday, but I resorted to my customary craving solution. I made a pan of peanut butter rice crispy treats sans rice crispies con corn chex. It has solved my cravings for years. I think there is enough sugar, salt, protein and crunch to take care of whatever biological necessity promoted the craving in the first place.
By the way, I highly recommend the corn chex (store brand, that is) substitution when snowed in. I also like corn flakes. So much so that I rarely use rice crispies anymore. Cheerios are ok. Not my fav.
And the craving is the same it usually is when it isn't Mexican food: sour. I crave sour when I'm overtired like a maniac. Sour gummy worms. Cherry Limeade. Lemonade made with lemon juice (the real stuff). Unfortunately, Braeburn apples don't cut it.