Not my wisdom, but I obtained the following information at The Private Life of the Romans by Harold Whetstone Johnston, Revised by Mary Johnston:
"82. A bloodless offering was made to Jupiter by the Pontifex Maximus and the Flāmen Diālis, consisting of the cake of spelt (farreum lībum) from which the ceremony got the name cōnfarreātiō. Then the cake was eaten by the bride and groom. With the offering to Jupiter a prayer was recited by the Flamen to Juno as the goddess of marriage, and to Tellus, Picumnus, and Pilumnus, deities of the country and its fruits. The utensils necessary for the offering were carried in a covered basket (cumera) by a boy called camillus, whose parents must both be living at the time (i.e., he must be patrīmus et mātrīmus). Then followed the congratulations, the guests using the word fēlīciter."