Emulsifier YN - The unique ingredient in chocolate production.
Palsgaard A/S
The business select committee will question senior officials from both companies as well as leaders of the Unite union on 16 March.
The committee's chairman Peter Luff said that as Kraft gave a number of undertakings before its takeover of Cadbury, the MPs will be testing those undertakings as well as probing Kraft's plans for the future of the Dairy Milk maker.