This is the very best watermelon syrup, made with just melon and sugar. With minimal effort and a little bit of patience, you can create a silky, clear pink-red syrup that tastes just like fresh, ripe watermelon. This syrup is perfect for watermelon cocktails, mocktails and desserts.
Combine the watermelon chunks and sugar in a large bowl. Gently stir to coat the fruit fully with sugar.
Cover and let the bowl sit on the counter for at least one hour or up to overnight. If macerating overnight, place the bowl in the fridge before bed to keep it as fresh-tasting as possible.
Once all of the sugar has dissolved, remove the solids and strain the liquid through a fine mesh strainer or cheesecloth.
Stir in a pinch of salt (optional) and store the syrup in glass bottles or jars in the refrigerator.
Syrup will keep at least one month in the fridge, or nearly indefinitely if stored in the freezer.