In Indonesia, I keep some inexpensive Marie Biscuits handy — as emergency snacks.

It dawned on me that I’ve done that all over the world. They seem to be in every small shop, everywhere.

The biscuit is round and usually has the name embossed. Always 66 mm in diameter.

Since they are quite dry, they have a relatively long shelf life. 

They were created by the London bakery Peek Freans in 1874 to commemorate the marriage of the Grand Duchess Maria Alexandrovna of Russia to the Duke of Edinburgh.