Simmer freshly toasted hazelnuts in a sugar syrup to extract their flavor oils, then add this homemade hazelnut simple syrup to your favorite coffee drinks, cocktails, and more!
Preheat the oven at 300 F. Line a sheet pan or baking dish with parchment paper and sprinkle the hazelnuts over the surface.
Place the hazelnuts in the oven and toast for 10-15 minutes until you start to notice the scent of hazelnuts coming from the oven.
Transfer the hazelnuts to a cutting board and chop into small pieces.
Place the sugar, water, and chopped hazelnuts into a medium saucepan and set over medium heat. Allow the mixture to simmer for 20-30 minutes and stir frequently. Be careful not to let the temperature get too high.
Remove the mixture from the heat and allow it to cool down for 10-15 minutes. Stir in homemade hazelnut extract (optional).
Place the funnel into your glass bottle and set the strainer on top. Strain out the hazelnut pieces and store the mixture in the fridge until needed.
Notes
If using almond extract instead of hazelnut extract, consider using half as much. Almond extract is notoriously strong, so add a little, taste it, then add more if you'd like.