Verjuice, Verjus or ‘Vert jus’ derives from the French ‘vert jus’ or ‘verjus’ and literally means, “green juice”. Vigorous vineyard growth demands heavy ‘green harvesting’ or thinning of the excess fruit of premium red and/or white grape varieties which takes place half-way through the growing process. Gently pressed, these half-ripe bunches of wine grapes yield a juice that is high in acid and low in sugar that is prevented from fermenting through rapid stabilization. These thinnings can often account for up to 50% of the total crop which is usually discarded to concentrate the flavours in the remaining bunches in favour of making wine.
It is an injustice to assume that verjuice is used only as a substitute for lemon juice and vinegar. It is so much more. It is, in fact, a premium, natural flavour enhancer that will add unimaginable depth of flavour and richness to your cooking; a zesty, elegant, delicate culinary condiment that can be used for a range of dishes as diverse as the inventive cooks imagination.
However, because verjuice shares the same acid base as wine, it will not distort the essence of wine, the way vinegar or lemon juice would and thus it is the perfect alternative to use in cooking when quality wines are being served with a meal.
Verjuice heightens the flavours of any fish, chicken, game, red meat, vegetable and fruit dish. It is ideal for deglazing pans for a deliciously rich, reduced, syrupy “jus” – which is then diluted with a little stock or water; it adds flavourful complexity to your vinaigrettes, dressings, syrups, sauces, gravies and reductions and a zesty balance to mayonnaise, marinades, pesto, pot-roasts, preserves and even pickling juices for fish ceviche, onions, veggies, etc.
Verjuice is also delicious as a healthy, non-alcoholic cordial, diluted with still or sparkling water, neat as an aperitif sloshed over crushed ice or, as a mixer for cocktails and sours (see Verjuice Cocktails).
Verjuice has an affinity with nut oils and combines particularly well with walnut and hazelnut oils and, of course, emulsifies superbly with ground nut and olive oils. Pumpkin Seed and Sesame oil combinations are also sublime but emulsification is not totally integrated with these oils – so shake together vigorously and pour over food immediately.
Verjuice must be refrigerated after opening and will keep for between 1 to 3 months depending on fridge temperature.