additives-in-winemaking

Demystifying additives in winemaking and viticulture

Growing awareness of the impact of food on wellbeing is a good step forward in terms of public health. However, there is growing concern over whether it is problematic to consider all preservatives and additives in general as harmful. An unfortunate byproduct of growing public concern has been that unscrupulous charlatans are more able to sensationalise objectively harmless additives and capitalise upon unsuspecting consumers. Admittedly there has in the past been genuine scandals creating cause for concern, the 1985 diethylene glycol scandal an example of one. With that being said, robust regulatory systems, regular review of the science, and a large amount of data now required pre-approval, should give consumers confidence that they are buying wine free of harmful additives. Winemakers are well aware of the stringent regulations they are subject to and have a good track record of compliance. Modern consumers expect to purchase quality products (albeit this is a somewhat subjective measure) which are free of spoilage and have a long shelf-life. In order to achieve a consistent quality product in a commercially viable manner, winemakers have available to them a number of harmless additives. Whilst there may be over 60 additives available to winemakers, the reality is that only a handful are used in often small, measured quantities. In this article, I hope to demystify common additives in winemaking and provide a more nuanced exploration of what these ‘additives’ are, how, why, and in what quantities they are used, and to discuss their harmless nature.

ruinart-second-skin

Hands-on with the next stage in Ruinart’s sustainability commitment

Viticulture is a long-term endeavour, one which is intrinsically linked to the wellbeing of the planet. Much more than being an organisational buzzword, to Ruinart, sustainability is the realisation of their responsibility to preserve. Extending this responsibility beyond the vineyard, for the past 10 years, Ruinart has progressively implemented eco-conscious practises across the entire business, from project proposals to service to packaging. Having already redesigned their existing gift boxes, the second skin is the evolution of this aspect of their commitment. The result of 2 years of research & development, the entirely recyclable second skin saw 7 prototypes prior to completion, is 9 times lighter than previous gift boxes and achieves a 60% reduction in carbon footprint compared to the current solution. Beyond this, working with manufacturer James Cropper and packaging expert Pusterla 1880, the manufacturing process itself is both efficient and sustainable. The impact of climate change on viticulture simply cannot be understated, effectively tackling this is a much broader undertaking than working the land. With the help of Chef de Caves, Frédéric Panaïotis, I took a more detailed look at the second skin packaging.

cork-winemaking

Cork in winemaking: history, production, taint and Diam

As early as the fourth century Egyptians are believed to have used cork for fishing buoys; however, there is no consensus as to when the first cork was used to stopper a bottle of wine. Corks have been found in Roman shipwrecks dating from the fifth century BC, though it does not appear to have been the usual method of closure. After the fall of the Roman empire, global trade vastly decreased, between 500 and 1500 cork farmers from the Iberian Peninsula struggled to their products and cork gradually disappeared. In the 17th century cork reemerged and for almost the last four centuries virtually every bottle of wine has been sealed using a cork. However, since the 1970s alternative solutions began to emerge and the cork monopoly looked to be in question. The cause of the onslaught, amongst other things, was a chemical compound known as TCA, otherwise known as cork taint. Despite the growing presence of alternative closures, millions of winemakers drinkers around the world refuse to budge. In this article, I will explore the history of cork, it’s production, faults and the future.

67-pall-mall

Revolutionising wine tasting at home: behind the scenes with 67 Pall Mall

As we head into the 15th week of forced closures, industry across the length and breadth of the UK faces an unimaginable demand to adapt or risk the inability to continue trading in the long-term. 67 Pall Mall is a haven for wine lovers, the exclusive members club in London not only has one of the most expansive wine lists in the world but also a spectacular array of sommeliers and events. In the face of their club being closed for the foreseeable future, owner Grant Ashton, vowed to keep all 130 staff on full pay, transform the club’s service and revolutionise the way we experience wine tastings at home. I spoke to Ronan Sayburn MS about how the club has adapted, transformed its service to members and how these changes will change the club looking to the future.

soil-microbiome

Soil and root microbiome: discovering the grapevines greatest weapon

Following my recent polemic against the claims of biodynamic winemaking, I spoke with Keith of Mise en abyme who asked me what I’d like to see emerge from the discussion around the legitimacy of biodynamics. My response? A more practical and evidence-based school of thought centred around achieving healthy soils and diverse, resilient ecosystems. Although understudied, it is widely accepted that microbiome is essential in upholding the fabric of life. Our gut, mouth and skin each host their own unique microbiome community whilst healthy soil microbiome is crucial for the growth and longevity of crops and wildlife. Nurturing this symbiotic relationship between this community of bacteria, archaea, viruses, fungi and protozoa is a core tenet of biodynamics. However, a number of studies have shown biodynamic preparations to be ineffective in improving soil health metrics. In this article, I explore microbiome in more detail and discuss working, proven practises for strengthening and diversifying soil microbiome.

Phosphorus in viticulture and winemaking: an exploration from soil to bottle

Besides that which is essential for photosynthesis, namely carbon dioxide, water, and sunlight, grapevines also require a range of nutrients to grow, survive and prosper. These nutrients are split into two groups depending on the scale of requirement, macro and micronutrient, the former being those required in larger amounts. Phosphorus is essential for plant growth. It is a component of cell membranes and DNA and plays a vital role in photosynthesis, the movement of sugars, and carbohydrate storage within the vine. Deficiency of phosphorus in vines can result in reduced vine vigour and yellowing of the interveinal area of basal leaves. In extreme cases, this may be followed by early defoliation of these leaves. Poor bud initiation and fruit set may also be observed. In this article, I will explore phosphorus in viticulture from soil to bottle.

cap-management-winemaking

Cap management in winemaking: punching, pumping and considerations

In order to make wine, grapes must undergo alcoholic fermentation. In the case of red wine, the vessel used for fermentation, dependent upon winemaker preference, will also contain the skins, seeds and stems. During fermentation, yeast produce carbon dioxide, this carbon dioxide causes grape solids to rise creating what is referred to as a cap. The cap can present a number of risks, a combination of acetic bacteria, the warmth of fermentation and oxygen could easily convert a vat to vinegar. For this reason, winemakers must manage the cap. Cap management also forms part of the winemakers desired stylistic preference. Tannins, anthocyanins and flavour compounds, all essential to a wines character, are found in large quantities in grape skins and so varying methods of cap management will greatly alter a finished wine. Fail at cap management, and you may well have failed the wine.

nitrogen-viticulture

Nitrogen in viticulture and winemaking: an exploration from soil to bottle

Besides that which is essential for photosynthesis, namely carbon dioxide, water, and sunlight, grapevines also require a range of nutrients in order to grow, survive and prosper. These nutrients are split into two groups depending on scale of requirement, macro and micronutrient, the former being those required in larger amounts. Nitrogen is the most abundant soil‐derived macronutrient in the grapevine. It plays a major role in all processes and a significant amount of nitrogen is essential for normal vine growth. In viticulture a nitrogen deficiency may affect key metabolic functions and retard shoot development and bunch formation. In winemaking a shortage of yeast assimilable nitrogen can result in problematic fermentations. In this article I will explore nitrogen in viticulture from soil to bottle.

potassium-winemaking

Potassium in viticulture and winemaking: an exploration from soil to bottle

Besides that which is essential for photosynthesis, namely carbon dioxide, water, and sunlight, grapevines also require a range of nutrients in order to grow, survive and prosper. These nutrients are split into two groups depending on scale of requirement, macro and micronutrient, the former being those required in larger amounts. Potassium is the second most abundant mineral nutrient in plants and has a number of roles. It is associated with the movement of water, nutrients and carbohydrates whilst also helping to regulate stomata and supporting enzyme activation. A deficiency can reduce yields, fruit quality and increase susceptibility to disease. Too much can cause a finished wine to lose acidity. In this article I will explore potassium in viticulture from soil to bottle.

grape ripeness

Grape ripeness: pursuing the optimum with Ruinart’s Frédéric Panaïotis

Selecting a date upon which to begin harvest is arguably the most pressing, influential and troublesome decision required of any vigneron during the annual growing cycle. There is the romantic notion that growers arrive at this decision as a result of intuitive tasting of selected grapes picked randomly from a particular plot or row. Whilst intuition often proves invaluable, particularly in tough vintages, times are changing and the role of technology in tracking optimum grape ripeness is proving increasingly valuable. In no region are they pursuing optimum ripeness quite as comprehensively than in Champagne. I got to grips with just how this pursuit is evolving with Frédéric Panaïotis, Chef de Cave at Ruinart.