The parents take flour, butter and sugar when they take the baby to the Gurdwara for the first time. The sugar, butter and flour are made in to a pudding called Kara Parshad. The pudding is shared with everyone in the Temple. Then the baby is given a bit of sugary water. It is called Amrit.
Water is a symbol of purity.
Sugar is a symbol of sweetness and goodness. Sikh babies are given their name when they go to the Gurdwara for the first time. There is a reading from the Holy Book. The reader then opens the Guru Granth Sahib the first letter on the page. The baby's name will begin with that letter.