Don't know how to say it? Don't worry, Emma will say it for you or you can do what I do and say "Meel Foy" which is close enough. Now, what is it?
First let's let Catrine describe it: "three layers of the puff pastry filled with the sweet scream and the sugar powdered on top. Ah...c'est magnifique!"
Sounds delicious, no? Let's dig deeper.
Mille in French means "thousand" (not "million") and we find the same word in millenium (1000 years) and millipede (though no millipede has 1000 legs).
Does Catrine's pastry have a thousand of anything in it? Catrine says that a mille feuille only has three layers of puff pastry. However, puff pastry itself is made of many many layers.
How? Well, puff pastry is made by folding and rolling wet dough and cold butter over and over and over and over and over.
When it is finished it looks like it has thousands of layers of flaky clawsomeness. However, it is way too delicious for anyone to ever stop and count.
The Feuille in mille feuille means "sheets" which makes sense as the puff pastry bakes into super thin sheets. However, feuille can also mean "leaves".
Huh? Well, in English a "leaf" can also mean a page in a book. So sheet/leaf/page can all mean the same thing. I wonder which is thinner: a sheet of paper or a layer of puff pastry in a mille feuille? I'm sure Catrine knows...