The activity, which was also booked by The Walt Disney Company in August, will take place at Tewin Bury Farm Hotel, Hertfordshire.
The last Tesco team-build, for 250 delegates on 30 June, was the largest that Chocolate Delight has ever hosted. Two judges from Tesco selected winning teams from groups of ten staff. In each team four people produced chocolate truffles, and the remaining six worked on a marketing plan and pitch.
Chocolate Delight founder Gerry Wilton said: "One of the Tesco team's radio jingles was sung to the theme of the 'Oompa-Loompa' tune, and they did the actions as they performed it, which was quite amusing."