The maker of Ketel One vodka has launched a management-backed offer to buy Dutch gin and spirits maker Lucas Bols for 269.5 million euros ($284.51 million), the companies said on Monday. The Nolet Group, also of the Netherlands, said it has agreed to offer 18 euros in cash per share for Bols, a 76% premium to Bols' closing price on Oct. 6 of 10.20 euros. Bols is the maker of Bols gins, passion-fruit drink Passoã, and Galliano liqueur.