
Aloe juice is a processed liquid drawn from the inner-leaf gel of the Aloe vera plant, used as a mild, faintly vegetal mixer.
Mildly vegetal, with only faint sweetness and a barely-there bitterness; the gel-derived body gives it a slightly slippery, viscous texture more than any strong flavour.
Reached for when a drink needs soft body and a clean vegetal note without added acidity or strong flavour, it is built or shaken in as a splash to accent or in volume to lend texture; purchased versions are often lightly sweetened, so added sweetener can be scaled back.
Its low sweetness is easily rebalanced with any syrup, but nothing reproduces the combination of mild vegetal character and gel-derived viscosity — so where that slightly viscous body is the point, aloe juice is effectively not substitutable; as a small splash the loss is tolerable.
The Aloe vera leaf has three layers: an outer rind, a bitter yellow latex just beneath it that contains aloin, and a clear central gel (parenchyma). Bar-grade aloe juice is made from the inner-leaf gel with the aloin-containing latex removed; unprocessed whole-leaf preparations retain aloin and are bitter and laxative.
Refrigerate after opening and use within its stated shelf life, as the processed juice is perishable.