Decide whether you need raw crunch (salads, slaws) or cooked tenderness (soups, stir-fries), then pick the substitute that matches that texture.
Use the table’s ratio: for softer or wetter swaps (cucumber, radish), start slightly under the amount and adjust after tasting.
Match cut size to your recipe: thinner slices for quick pickles/salads; thicker julienne for stir-fries so pieces don’t collapse.
If the substitute is peppery (turnip) or strongly pungent (radish), reduce bite with peeling, soaking, or brief resting in salted water.
Taste and rebalance: add a small pinch of salt or a splash of vinegar to mimic daikon’s clean, sharp lift.