What is actually the difference between wines that are produced organically, bio dynamically or sustainably? And what is vin naturel (natural wine)? We will list it for you. Organic wine Organic farmers do not use fertilizers and chemical pesticides against fungi and pests. The only exceptions to this are sulfur and copper sulfate. Copper is in a mixture of copper sulphate with some lime and water (Bordeaux porridge) that is widely used in both organic and conventional vineyards because it is the only remedy for the stubborn fungus mildew. Sulfur also kills microorganisms that can spoil the wine labels . Sulfur or sulphite binds with oxygen, which prevents the wine from oxidizing. Sulfur also kills microorganisms that can spoil the wine. Wine with sufficient acidity, tannin and alcohol can remain stable with little or even no sulphite (which is rare), provided the grapes are healthy and hygiene in production is optimal. Because of the tannin, this works better with red wine than with w