What analogy visualizes the expansion described by FLRW models?

Raisins baking in rising bread

The expansion of spacetime described by the FLRW metric and validated by the Hubble-Lemaître Law is effectively illustrated using the analogy of raisins baking inside rising bread dough. In this analogy, the dough represents spacetime itself, and the raisins represent galaxies. As the dough expands uniformly, the raisins move farther apart from one another. Crucially, an observer situated on any single raisin will observe all other raisins receding, with the farther ones appearing to move away at a proportionally faster rate ($v = H d$). This analogy successfully conveys that the expansion is not happening relative to a central point in space, but rather that space itself is stretching everywhere.