I was plucking slugs and snails from the hyssop (to kill, not to eat) and a branch broke off. A good supply of before-supper tea right there. Among other things, hyssop is what they call an "appetite stimulant", which makes it sound like you should take it if you have a bad appetite. But that's bunk thinking. Truth is that even if your appetite is good (as mine is) it makes eating better. I call it a supper enlivener: it makes eating more enjoyable - spirited, if you will. I do not mean that in a gluttonous sense, rather in a wholesome sense.
Also, when I water the garden the hyssop releases fragrance upon being wetted.