Leave your herbs attached to the living plant. Then, using a pair of scissors, cut off only as much as you need, at the time when you need it. This technique will provide you with the freshest herbs possible. Of course this trick requires actual green, living plants, plus the requisite plantlife-support systems (sunlight, water, dirt). Keeping plants alive can be somewhat challenging, especially during the fall and winter months, unless you live somewhere tropical, own a greenhouse, possess magickal faerie powers, etc.