Question

what is the chemical nature of buttemilk

Answer 1

Buttermilk may be described in terms of both traditional/conventional and cultured buttermilk. Traditional buttermilk is the liquid left after butter making from fermented cream or milk, which has been fermented by naturally occurring lactic acid bacteria (LAB) (Libudzisz and Stepaniak 2003; Sodini et al. 2006)