People experiment with food every day.
They change a recipe, grow a new variety, switch brands, track how a meal affects them, compare fresh and frozen vegetables, or test whether a new preparation helps a household eat an ingredient it previously rejected.
Most of those observations disappear. HMC helps people record them in a way that is simple enough to use and structured enough to compare.
The goal is not to turn every kitchen or garden into a laboratory. The goal is to make observation more honest: define the question, record the starting point, change fewer things at once, note important context, and report what did and did not happen.