SEARCH RESULTS 40 hits

Write the treatment date and the withdrawal date on the animal or in the book, and check the milk before it goes in the tank. See Vaccinating And Cold Chain.

When one goes up and the other goes down: speed and time, men and days, pressure and volume.

Roast the bones first for a deeper flavour, and add the vegetables for the last hour so they do not turn to mush. See Making Stock.

Ghee keeps for months in a warm kitchen, which is why it is the useful one. See Butter And Cheese.

Diamond-shaped panels, paving patterns and braces. Multiply the diagonals and halve.

A condition score tells you more than a weight, and it takes ten seconds. Handle the animal and look at the hooks, the hips, the tailhead and the ribs.

The wire needs to be tight and the post needs to be firm. See Setting Fence Posts and Fencing Wire And Straining.

The rule that lets you scale up a gas reaction - a bottle of gas and a cylinder of gas behave the same way.

A lever, a block and tackle, a ramp, a screw jack. You trade distance for force, and no machine beats 100% efficiency. A ramp 4 m long and 1 m high has a theoretical advantage of 4.

The third side of any triangle when two sides and the included angle are known.

Order 5% extra. A half block per row is needed at every corner and opening, and people always run out.

Odd-shaped plots and roof panels where the height is awkward to measure.

Weigh the rice and the water and the result is the same every time. Salt the water, and let it rest before you cook it.

Honey is about 80% sugar and 20% water, and it is stickier, so cakes brown more and keep longer. Reduce the liquid in any recipe where you swap it in.

The first number for any insulation job. Measure every wall and subtract the openings, and buy 10% extra for the cutting.

Warm the milk to 45 C, cool to 40 C, add the starter and keep it warm. See Yoghurt And Kefir.

The only sane way to scale a bread recipe, and the way professional bakers write them. Change the flour and everything scales with it.

A boiling thermometer is worth the money. Overcook the jam and it goes tough, undercook it and it runs. See Jam Jelly And Preserves.

Growth and decay, half-life and the inverse of the exponential function.

Why a soft bag of sand and a hard block hit differently at the same speed, and why you roll with a fall. Doubling the speed doubles the momentum and quadruples the stopping force.

The rule behind a pressure cooker, a tyre, a gas cylinder and a fermenting barrel. Pressure rises with temperature and with the amount of gas, and falls as the volume grows.

For checking that a caustic solution is strong enough, and for understanding why a wash and a rinse need different strengths.

Cheddar and hard farmhouse cheeses need about 9-10 litres of milk a kilo. A cream cheese or a cottage cheese needs far less. See Butter And Cheese.

Two different questions. Conception tells you about the bull and the condition score; calving rate tells you about the calving shed and the hard cases.

Sound, water, light and radio. Also the drum length of a pipe organ and the spacing of ripples on a pond.

The way to know if your cider is fermenting and if your wine is ready. Sugar is the fuel for the yeast, and the falling reading tells you it is running out. See Cider And Perry.

Colour is not proof. A meat thermometer costs almost nothing and settles every argument about dinner. See Cooking Temperatures.

For a header tank and a trough system, and for a yard where the mains cannot keep up. See Water Troughs And Algae.

Feed mix problems, two unknown costs and balancing rations.

Pricing produce, meat, feed and workshop work without confusing margin with markup.

Grain heaps, fertiliser heaps, sand and gravel cones, and conical feed piles. A third of the cylinder of the same base and height.

For sizing a water butt or a tank for the yard and the animals. See Water Troughs And Algae.

For beans, beetroot, carrots and onions sown in a drill in a bed. Sowing three seeds in a station and taking the best one is often more reliable.

How to work out how much fat ends up in a pie crust, and how to make it flaky instead of short. See Pastry And Pies.

The rules that decide what goes in the freezer. Label everything with the date and what it is.

Any three-sided run: gable ends, braces, triangular beds and roof bays.

Sloping panels, lean-to roofs and fields with parallel sides. Use perpendicular height, not the sloping side.

Count the rope, not the pulleys. A block and tackle with the load on a four-part reeve has an advantage of about 4, less the friction in every sheave.

The number that tells you whether a mill is worth setting up. See Home Milling.

Margin is measured against the selling price, markup against the cost. They are not the same number and confusing them is how people lose money. A 50% markup is a 33% margin.