Kosher salt cuts through some of the bitterness of the lemon, making this a preserve go a long way in many dishes.
Substitution Tip:
Instead of lemons, use about 4 medium oranges (plus 1 for juice) and 1/2 cup kosher salt, or 15 limes (plus 5 for juice) and 2/3 cup kosher salt.
Herb & Spice Variation:
Add 2 tbsp coriander seeds or a mix of 2 star anise and 2 bay leaves to lemons, oranges or limes.