Complex sentence: The origin of calas is most often credited to slaves who came from rice-growing regions of Africa; however, a 1653 French recipe, "beignets de riz", lends support to a French origin as well.
Split into simpler sentences: The origin of calas is most often credited to slaves who came from rice-growing regions of Africa. A 1653 French recipe, "beignets de riz", lends support to a French origin as well.