Consuming fresh, organic produce is the supreme reward for time spent in the garden. There are many factors to consider before harvesting your bounty; particularly: maturity of the produce/plant, time of day, method of harvesting.
Examples:
For peak flavor, harvest (most produce) just before full maturity.
Collecting
Basil in the morning provides more luscious and zestful leaves.
These are factors that I have noticed over various harvests, but there is no
right or
wrong way to enjoy your garden. Whatever you choose, harvest in a mindful way that allows the plant to regrow, re-fruit, and/or reproduce.
Eat well.