Is it possible to freeze fresh hyssop? Can I expect it to be as aromatic and flavorful after defrosting?
In my experience, the answer for most leafy herbs is yes, fragance and flavor is preserved. Never tryed hyssop, however Gardening Know How site says it freezes fine:
it can be dried or frozen and stored for later use. When harvesting a hyssop plant, cut it in the morning hours once any dew has dried. Hang the plants upside down in small bunches to dry in a dark, well-ventilated area. Alternatively, you can place the leaves in a plastic bag after removing them from the stems and place in the freezer until ready to use.
The aromatics diminish. I've tried this, with hyssop - because I have a bunch of bulk spices. I've found that an airtight jar in a dark/cool cabinet is best, even for an extended period (my jar on the shelf is over a year now).
The hyssop I get is from Jordan. I also receive sumac and the blend zaatar.