The Wine Maker's Answer Book: Solutions to Every Problem; Answers to Every Question, by Alison Crowe.
The Wine Maker's Answer Book is a 24/7 help line with advice on hundreds of winemaking problems. From the basic questions of the novice (What equipment do I need to get started?) to the finer points of fermentation (What is the effect of malolactic fermentation on acidity?), every step of the process is covered in a friendly question-and-answer format. For winemakers at all levels of expertise, this handy, at-a-glance reference will make every batch of wine taste better.