A reference, not a magazine.

Winemaking.net exists for one reason above the others: most home winemaking advice treats free SO2 as a number you hit and forget, when the amount actually protecting your wine depends on its pH and the relationship is logarithmic. Every calculator here shows its working so you can check it.

Grape figures are typical ranges at harvest, not specifications. The same variety in a cool site and a warm one differs more than two varieties grown side by side, so treat them as planning aids and buy on the numbers you measure yourself.

Fault pages give the honest answer on whether something can be fixed, which is usually no. A site that sells you a cure for oxidation is selling you something that does not exist.

Nothing here is legal or regulatory advice. Chaptalisation, additions and home production limits are regulated differently in every country and often in every state; check what applies where you are before doing any of it to wine you intend to sell.

Sister site: Brewing.net, which does the same job for beer.

Corrections are welcome and acted on: hello@winemaking.net.