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.