Haskap — also called honeyberry, blue honeysuckle or, in Japan, haskappu — is the elongated, deep blue-violet fruit of the edible honeysuckle Lonicera caerulea, a cold-hardy shrub of the boreal north. Tart-sweet with a flavour often likened to a cross of blueberry, raspberry and blackcurrant, it ripens earlier than almost any other temperate fruit and is eaten fresh, frozen, or made into jam, juice and wine.