McDermott Will & Emery, Sidley Austin and Jenner & Block have taken the lead advisory roles on Singapore-based agricultural business Olam’s $1.3bn (£830m) acquisition of Archer Daniels Midland’s (ADM) global cocoa operations.

The deal, which is set for regulatory approval and clearances, will make Olam one of the largest suppliers of sustainable cocoa, and the third largest cocoa processer.