WHO would have thought that the Jaffa Cake could become a symbol of the Trinity? The Sunday Club at St Columba's, Bathgate, Edinburgh, decided to build on young children's perception of church, where the after-service biscuits are often the most memorable experience.

The diocesan youth officer, Morag Buxel, says that her two-year-old's summary of a midweek eucharist was: "This is my body. Blow out the candle. Have a biscuit." And she finds that her children's verdict on any new church they visit is an analysis of the refreshments offered. The lesson of this, she says, is that biscuits matter, as an important part of the welcome.

But she goes further, writing in the Edinburgh diocesan magazine, The Edge. At the Sunday Club, using a metre-long packet of Jaffa Cakes, they explored the nature of the Trinity. "We analysed the nature of God: Father, Son, and Holy Spirit, in terms of the sponge base, the orangey bit, and the chocolate coating.

"The children decided that God the Father was the orangey bit in the centre, rather hidden. God the Son was represented by the sponge base, the foundation of our Christian life. God the Holy Spirit was the thin layer of dark chocolate enveloping the surface." At the end of the service, the children gave a Jaffa Cake to each member of the congregation, "and we enjoyed tasting the Trinity together".