Postman Pat and the Ice Cream Machine by John Cunliffe
It's the day of the children's picnic in Greendale and Ted Glen has built an ice cream machine for the occasion. When the power cuts out, the ever-inventive Ted tries all kinds of ways to get his machine back in action - even connecting it up to Pat's van! He finally hits on a solution and there are plenty of delicious flavours in time for the picnic, including a special surprise flavour that's not very popular with Pat but is just the thing for Jess!