Australian finger limes (aka caviar limes, citrus australasica) are an unusual and rarely cultivated citrus fruit featuring a tart, slightly-herbal lemon-lime flavor.
As tasty as finger lime is, what really makes this small fruit stand out is its unusual appearance. The interior of each long finger-shaped lime is packed full of loose juice-filled orbs (vesicles) that spill out when the thin skin is cut. They’re frequently described as “citrus caviar” and indeed, their jewel-like shine and popping sensation when consumed evoke fine caviar.
Though these strange fruits look like something that must have been bio-engineered, they evolved naturally in the wild Australian rain forest.
Their outer skin can be anywhere from dark green to purplish or brownish red. Most of these finger limes are a very pale green on the inside, though some are a very light pink and there is a very rare chance of a darker red tint. You can’t really tell from the outside what color they will be on the inside.