What do you call a mixture of 2 herbal drinks? [closed]

What do you call a mixture of 2 herbal drinks? For example, butterfly pea extract and pandanus juice.

I've seen such mixtures referred to as concoctions (check the example below).

ODO:

concoction NOUN

1 A mixture of various ingredients or elements:

‘The couple have to collect the herbs themselves and brew the concoctions in earthen pots on low flame.’

A blend.

Note blend is used for mixtures of any substances - e.g. drinks.

NOUN 1A. mixture of different substances or other things:
‘the chutney is a blend of bananas, raisins, and ginger’.
‘Ontario offers a cultural blend you'll find nowhere else on earth’.
[...] Origin. Middle English: probably of Scandinavian origin and related to Old Norse blanda to mix.
Oxford Dictionaries

One particular usage is for whiskeys, which may be a interesting analogy for the OP's herbal drink requirement, especially if they can imply the herbal drink is created with similar care. Quoting Wikipedia :

A blended whiskey (or blended whisky) is the product of blending different types of whiskeys and sometimes also neutral grain spirits, coloring, and flavorings. It is generally the product of mixing one or more higher-quality straight or single malt whiskies with less expensive spirits and other ingredients. This allows for a lower priced product, though expensive "premium" varieties also exist.
Some examples of blended whiskey include Canadian Mist, Jameson Irish Whiskey, Seagram's Seven American whiskey, the premium Japanese brand Hibiki and the premium Scottish brand variant Johnnie Walker Blue Label.

Colloquially, it could be called an "herbal cocktail". Just about any native English speaker would understand that to mean a mixture of herbs or herbal drinks, just like a "cocktail of drugs" means various drugs taken together.

You could call it a drink

Liquid swallowed for assuaging thirst or taken into the system for nourishment (OED)

That it's composed of two "ingredients" or "sub-drinks" is irrelevant to the use of the word.

You could also call it a combination:

Combined state or condition of two or more things (OED)