Tasty sour with strong fruit flavor and just the right level of tartness. Passion fruit and tangerine are both acidic flavors, not offset very much by the pink guava, but the result is not pucker-inducing, merely piquant. All three fruits are evident. Viscosity is fairly thin, and the liquid a dark amber with a bit of sediment at the bottom; but not the opaque dirty milkshake of a smoothie sour. Pleasant. I'd buy a pack.