Add the butter, sugar, salt, and water to a medium pot over medium heat and bring to a boil. Stir occasionally. Once boiling, cook for 1 minute, stirring frequently.
After 1 minute, turn heat to medium-low and simmer for 5 minutes, stirring frequently. Remove from heat, let stand for 5 minutes, then stir in extract, adding to taste (Start with 1 teaspoon—it’s always easy to add more!).
Video
Notes
Note 1: Maple extract can be found with other baking extracts. I recommend McCormick’s® pure maple extract for the best flavor. Taste and adjust the amount depending on the brand.Storage: Let syrup cool, then store in an airtight container in the fridge for 1–2 months.