I finally made it: the font based on the few letters that my favourite Biscuit carries.

I wanted such a font to add to my font collection of  unusual or art-craft-themed fonts (started when we had our first internet-capable computer in 1999). As I couldn't find this font I looked at Art Nouveau and Art Deco style fonts, also at furniture and wall papers of that period --- that kind of guided me when working on the 'missing' letters of this font which must have been designed before it could be chosen for the biscuits, and which I neither have found nor do I know its real name.

The UC are on biscuits. The LC are only the letters, on the level they have on  the biscuits to enable a kind of 'Majuscle' arrangement for texts.

Diacritics of more Latin are done, also useful symbols and punctuation. A crumb-free "+" is on the "%", a biscuit with surface dips is on the "(" and one with a flat surface is on the ")". The square brackets, when used without a space or letters, will make into a narrower biscuit, and are also used like round brackets.
 

I love the traditional French biscuits made on the French west coast where  Loire meets Atlantic.

The biscuits are thin, crunchy, light, not too large, not very sweet, melt on the tongue, and biscuits very like the original can be made/baked quite easily.

The traditional version has a limited range of letters, enough to write the name of town, manufacturer and product. I've been unsuccessful in finding an image of the font which contributed just a few letters to decorate these biscuits.

I spent some time looking at other type of the Victorian/Art Nouveau era until I had collected enough information to help me design the missing letters. I added the French diacritics, naturally. I think my additions look successful and the whole font looks quite Art Neauveau and in the style used originally.

The square brackets [ and ] make a biscuit shape when used 'blank'.

Bon appetit, enjoy your "Biscuit de l'Ouest".