What’s your favorite flavor of Hist sap?
Mine’s green apple bubble gum <3
I will preface by saying that is an odd question, but I'll humour you.
While there aren't any records I could find (as of yet, anyhow) that describe the taste of Hist sap, I know from personal experience that it is as varied as you suggest.
Though most samples of Hist sap are visually similar, with some Hist trees producing unique colours and textures of sap, there are indeed different flavours one can experience from one Hist tree to another but there is usually a consistent balance of sweetness and bitterness.
All the same, it is for the best that Hist sap doesn't taste like, say, maple sap. Even for Argonians, it can be toxic in large amounts. Best enjoyed in moderation, hence the phrase 'lick the sap'.
As for my favourite sap I've tasted? I have a modest bottle of sap taken from the chilling Hist of the Frost-Scale tribe, who live deep in the lost swamps of Black Marsh. Imagine the taste and feeling of honeyberry syrup that cools on your tongue, accented with almost a biting spearmint aftertaste. There's nothing quite like it.
I have included a modest rendition with my letter. Perhaps I will return to my homeland to gather stories sometime soon.
– A letter from Stops-His-Quill written in reply to another, bearing the wax seal of Clan Sekiryu; attached is an illustration of a bottle of cool blue Hist sap.