My junior year in college, I studied abroad in the UK. During the ten months that I was there, I ate roughly one thousand McVitie's plan chocolate digestives.
To clarify for Americans, I will say that "digestives" are basically cookies, sort of like graham crackers, and "plain chocolate" means dark chocolate.
When I lived in England, I would go through a pack of these in a couple of days. They are just so compulsively eatable. They taste basically like a s'mores only without the warm marshmallow inside--just something like a graham cracker with some dark chocolate coating it. It's not too sweet, and it's not so intensely flavored--it's like the dessert equivalent of pretzels, in that it's kind of plain and you just want to keep eating it.
Fairly recently, McVitie's digestives have become easily available in some U.S. grocery stores. They're only a couple dollars; not even priced like an import. When I first discovered this, I briefly felt like, "This isn't right. I only want to eat these when I am in England." Then I got over it. Now I eat three or four digestives every day.
Since my time in England, McVitie's has refined their packaging, adding this nifty re-sealable top, so you don't necessarily have to eat all the biscuits in one go (though obviously you can if you want to).
And because this is the U.S. and we have laws here, they've stickered the packages with FDA-friendly nutritional information, meaning that now, for the first time, I could find out just how many calories and grams of sugar are in each of these. I mean, I haven't read the label, so I don't actually know. But I could.
BOTTOM LINE: If you're buying a pack of grocery store cookies, I would definitely advocate for these over the Oreos, Chips Ahoy, or pretty much anything else on the shelf. Perfect for tea time, snack time, or coming home from a party at 3am.