Nabisco’s Oreo cookie was once the sublimely perfect combination of two crunchy chocolate cookies and a stiff, sweet white filling.

Then regular Oreos begat Double Stuf (twice as much filling) begat Big Stuf (bigger cookies) begat Mini (bite-size). Then Pumpkin Spice Oreos, Cool Mint Oreos, Birthday Cake Oreos, Peeps Oreos.

Now the newest innovation — Fireworks Oreos. With a filling dotted with bits of Pop Rocks, the candy that fizzes in your mouth, it actually sounds kind of fun.

But the Pop Rock action is ultimately disappointing. Basically, you get gritty filling, more like “Beach Towel Oreo” than foaming, popping Oreo. The only action we got was tiny, short-lived and almost indetectable.

Along with the limited release of Fireworks Oreos, Nabisco is holding a contest, #MyOreoCreation . You post your idea for a new Oreo flavor on Instagram and Twitter with the hashtags #MyOreoCreation  and #contest . If they pick your idea, you get a chance to win $500,000. Details are at www.myoreocreationcontest.com.

— Kathleen Purvis

Charlotte Observer