Kinda stoned but I think I have something good.
I'm thinking about what blood tastes like to Astarion?
Unless stated otherwise I've been defaulting to the Anne Rice philosophy that vampires get a life force from people. You gain a sense of life and being alive through someone else, which is why vampires are never satisfied and are always hungry, black holes. They can never be truly alive and need to take it from someone else.
I like to imagine this applies to dnd vampires too. Astarion compares his companions to alcohol when hes fantasizes about taking drinks out of them. When he says this though, I dont literally think that blood tastes like alcohol, I think what he calls "taste" is actually a general vibe on who they are, and what it's like to be alive as them.
"Wyll is nice so he must 'taste' sweet."
"Lae'zel is so aggressive, she must 'taste' spicey."
What does sweet and spicy even mean to him at this point? Hes mapping out their personality.
Anyway, my Durge tastes like a strawberry and lime cocktail with chili on the rim.