'algarrobin' originates from Spanish, specifically the word 'algarrobo,' where 'al-' is an Arabic definite article and 'garrobo' referred to the carob tree.

'algarrobo' transformed into the English word 'algarrobin' through adaptation and usage in culinary contexts.

Initially, it referred to the carob tree itself, but over time it evolved into its current meaning of a sweet syrup derived from the carob pods.