Identify whether your recipe uses preserved lemon mainly for the rind (chopped peel) or for the tang (juice/brine).
Choose a substitute from the list below that matches that need: rind-forward swaps for savory depth, juice-forward swaps for bright tang.
Use the 1:1 ratio as a starting point, then adjust salt after tasting because many substitutes are saltier or less complex.
For zest-based swaps, let the zest sit with a pinch of salt for 2–3 minutes to bloom flavor before adding to the pot.
Stir in near-simmer (not at the very end) for cooked dishes so the citrus oils integrate.