Start with one herb
Choose a herb you already use and write down what you notice about its aroma, leaf shape and role in a dish. Your own sensory notes are a good way to build a personal reference. Keep food handling and product storage instructions from the label beside those notes.
Compare one change at a time
Try the same familiar recipe with the herb added at different stages. Record the amount and timing so the comparison means something next time. These are kitchen observations, rather than claims that a herb treats a health condition.
Buy for the next meal
A small plan can prevent an attractive bunch from being forgotten. Decide on one main use and one second use before buying, then check the product’s condition and handling directions. If a product is subject to a recall, follow the official notice rather than a recipe page.