When food is cooked, the first portion thereof should be offered to a Brahmana. The particular offerings called Bali should also be presented to the household gods. The deities become pleased with such gifts.
यथा सिद्धस्य चान्नस्य ग्रहायाग्रं प्रदीयते। बलयश्च गृहोद्देशे अतः प्रीयन्ति देवताः॥