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).
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.’
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.
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.
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)
mid-13c., from Medieval Latin elixir "philosopher's stone," believed by alchemists to transmute baser metals into gold and/or to cure diseases and prolong life, from Arabic al-iksir "the philosopher's stone," probably from late Greek xerion "powder for drying wounds," from xeros "dry" (see xerasia). Later in medical use for "a tincture with more than one base." General sense of "strong tonic" is 1590s; used for quack medicines from at least 1630s.
- a liquid extract, as tea, prepared by steeping or soaking.
This is a hypernym for any sort of herbal drink that is formed this way and would cover multiple drinks. It doesn't specifically cover a mixture but could be what you're looking for.
You might call such a drink a tisane twosome, if you're trying to be a smart-aleck. I would just call it an herbal tea. The fact that it's composed of multiple herbs is irrelevant.
that which is fused; the result of fusing:
A ballet production is the fusion of many talents.
(of food or cooking) combining usually widely differing ethnic or regional ingredients, styles, or techniques: a restaurant serving French-Thai fusion cuisine; a fusion menu.
Can't believe this hasn't been answered yet. I would call it a potion.
a mixture of liquids (as liquor or medicine)