I just cleaned out my herb cupboard and I have some herbs that I bought in 2018/2019 (ex, peppermint leaf, burdock root, dandelion root, nettle leaf.) How do I know if they are still ok to use? Should I make tinctures out of them or start over with new dry herbs? Is there a shelf life on herbs? If they are less potent, can I just add more herb and less alcohol if I’m making tinctures? So many questions! Loving the new Homestead Academy site!