The useful frame is that bread is a foam with a solid structure. Something has to make the gas, something has to trap it, and something has to set around…
The organising fact is that a plant has several parts, and if you consistently select for one of them getting bigger, you eventually get a vegetable that is mostly that…
The useful frame is that milk is holding itself together rather than being a stable liquid. Almost everything below is either that arrangement breaking or somebody breaking it on purpose.…
The frame that makes sense of all this is that cold slows rather than stops. Everything that would happen at room temperature still happens, more slowly, and a few additional…
The useful frame is extraction. You are dissolving specific substances out of solid material into water, and everything about the result depends on which substances come out and what happens…
The governing fact is volatility. An aroma compound has to leave the food and travel through air to reach you, and everything below is about what makes that more or…