A Gallon of Milk: 104 Ways to Turn Milk Into Yogurt, Butter and Fresh Cheese at Home: What Every Gallon Actually Yields, What the Whey Is Worth, and What Each One Costs Against the Shop

A gallon of whole milk weighs 3,780 g and costs about four dollars. Every book about making dairy at home tells you how. None of them tells you how much comes out the other end — and that is the only question that decides whether it was worth the afternoon. Turned into yogurt, that gallon becomes 3.8 kg of yogurt. Nothing is lost. Turned into ricotta, the same gallon becomes 504 g of cheese and 3.3 kg of whey. An eighth and seven eighths. A book that stops at the eighth has left out most of what you paid for. THREE RULES, PRINTED ON PAGE ONE Every yield in this book comes from one of three stated rules, and none of them is typed in beside a recipe. A fresh acid-set cheese returns about 5.5 percent of the milk's weight, plus 2 percent more for every 1 percent of fat in it. Whole milk gives about 12 percent. Skim gives under 6, because the curd traps fat as well as protein and there is no fat to trap — and there is a skim milk recipe in here that the book tells you not to make. Butter is 81 percent fat and churning recovers nearly all the cream's fat, so the butter weight is arithmetic and so is the buttermilk left over. Straining takes a stated fraction of yogurt's weight and changes nothing else. An hour takes a quarter. Four hours takes half, and half is what a tub of Greek yogurt is. FOUR NUMBERS ON EVERY PAGE What went in. What came out. What was left over — and the whey is not an afterthought here, it has its own chapter of twelve recipes. And what it costs per 100 g against what the shop charges for the same thing. ON PRICE, THIS BOOK NAMES ITS LOSERS 58 of the 85 priced recipes beat the shop. The other 27 do not, and they are listed together rather than buried. Yogurt is transformative — and after the first batch the starter is free. Fresh cheese is a narrower win, because a gallon of milk costs close to what a tub of ricotta does. And plain butter is simply more expensive to make than to buy: cream is dear per pound of fat. Cultured butter is the exception, and the book shows why. WHAT THIS BOOK REFUSES No raw or unpasteurized milk. Nothing aged or ripened — everything here is finished in an hour and eaten within a week or two, because aging needs controlled conditions and a judgment a chapter cannot teach responsibly. No canning of any kind: dairy is low-acid, and home-canned dairy is specifically advised against by food preservation authorities. And no dairy kept under oil at room temperature. Three of those four are enforced by the program that assembled this book, which refuses to build it if a recipe breaks them. EIGHT CHAPTERS, 104 RECIPES Yogurt and everything strained from it. Butter, and the buttermilk that comes with it. Fresh cheese in under an hour — ricotta, paneer, queso fresco, thirty-minute mozzarella. Cultured creams. Soft spreads. What to do with the whey. Sweet dairy. And cooking with what you made. Plus two chapters that only arithmetic can write: one shopping trip traced through eight things, each made from what the last one would have poured down the drain; and a protein-per-dollar table across everything in the book. WHAT IT WILL NOT PRETEND Whey is not a protein supplement. A litre carries roughly what a large egg does, and the book says so in the chapter that uses it. There are no photographs. They would be pictures of cheese nobody made for this book, and it would show. It names no brand. And it is not a food safety authority — the four things it refuses, it refuses outright rather than managing. 104 recipes. 40 ingredients priced. Three rules, and every number in the book computed from them.