According to Official Guinness Records,
The largest cooking vessel has a volume of 23,616 litres (5,194.79 UK gal; 6,238.69 US gal) and was constructed by Union Energy Corporation Pte. Ltd. (Singapore), in Singapore, on 1 August 2015. The cooking vessel was constructed to cook the record attempt for the largest curry.
For a complete list of 2015 records, please visit 2015 Guinness Records in Singapore.