Lime juice cordial
Sweetened lime juice, or lime juice cordial, is lime juice with sugar added in order to preserve it without adding alcohol.
This method was patented by Lauchlin Rose, who first produced sweetened Rose's lime juice commercially in 1867 in Edinburgh, Scotland.
Sweetened lime juice should never be used in recipes calling for fresh lime juice as it is much sweeter. It is, however, important in drinks shuch as the Gimlet.