Idiom medium 22 / 51
“just deserts”
i · The common misuse One wrong form
ii · What it meansTwo lines, no filler
Here 'deserts' (one S) means 'what you deserve' — same root as 'deserve.' Nothing to do with pudding. The phrase has nothing to do with food; the near-homophone is coincidental.
iii · Memory hookKeep this one
Deserts = what you deserve. Desserts = pudding. He got his just deserts — the reward, not the cake.