Combine red wine vinegar, sugar, cinnamon sticks, cloves, and lemon zest in a saucepan. Bring mixture to a boil, stirring to dissolve sugar, and reduce heat to low. Simmer until the sauce reduces slightly and coats a spoon, about 10 minutes.
Tips & Tricks
Spaghetti with Red Clam Sauce
See how to make a super-simple pasta dish with flavorful clam sauce.