The spelling of "blanchet" can be a bit confusing for some people, especially since it's not a commonly used word. However, it is pronounced as /blɑ̃ʃe/ in IPA phonetic transcription. The "bl" sound is pronounced like "bleh", and the "ch" is pronounced like "sh". The accent on the "a" is called a tilde, which indicates nasalization. Overall, "blanchet" is spelled exactly how it sounds, making it an easy word to remember once you've heard it pronounced correctly.
The word "blanchet" originates from the French language. It is derived from the verb "blanchir", which means "to whiten" or "to bleach". The word "blanchir" itself can be traced back to the Old French word "blanchir" or "blancir", which also means "to whiten" or "to make white". The ultimate root of the term comes from the Latin word "albus", meaning "white". Thus, "blanchet" is related to the idea of something being white or made white through the process of whitening or bleaching.