First, boil the water, then let it cool slightly so it's no longer boiling.

Next, add the sea buckthorn, and if using berries, gently mash them.

Then, let it steep for 5 to 10 minutes.

After that, strain if needed, and stir in the honey.

Finally, flavor it with lemon juice or a little grated ginger, if you like.

Note: Don't add honey to boiling water, since it loses its valuable compounds that way.