Srila Prabhupada recommended a minimum of 16 rounds of the Hare Krishna maha-mantra daily for serious practitioners. Each round consists of 108 repetitions. However, even one round chanted with attention and devotion is valuable. Quality is more important than quantity.

Prepare vegetarian food with love and cleanliness. Place it before a picture or deity of Krishna, offer prayers, and request Him to accept it. After a few minutes, the food becomes prasadam (mercy) and can be honored. The consciousness while cooking and offering is most important.