Remove wide strips of yellow peel from the lemons, avoiding as much white pith as possible.
Add the peels and sugar to a bowl or jar. Rub and massage them together until the sugar smells strongly of lemon and looks damp.
Cover and let the mixture rest for 3 to 24 hours, until glossy syrup collects around the peels.
Add ¾ cup hot water and stir until the sugar dissolves. Add the remaining ¼ cup for a looser syrup.
Strain out the peels, stir in the salt, cool completely, and transfer to a clean bottle or jar.
Notes
Storage: Refrigerate in a clean, airtight container and use within 2 weeks. Freeze small portions for up to 3 months.Serving: Start with 1 ½ to 2 ounces per drink and balance with fresh citrus, water, bubbles, or spirits.
Keyword lemon oleo-saccharum, lemon syrup for drinks, oleo saccharum syrup