Before you start, remember that this syrup is to serve with your favorite food like keto pancakes, keto crepes, or chaffles. It can't be used as a maple syrup replacer in keto baking recipes!
In a non-stick saucepan, whisk in the xylitol and water.
Bring the non-stick saucepan over medium heat and bring to a boil. You want to melt the sweetener to avoid crystallization when the syrup cools down. To do so, the syrup should reach the melting point of the sweetener (92°C/198°F) for xylitol, meaning if the water boils, you are good!) Read my post above regarding the melting point of other keto sweeteners like erythritol or allulose to understand why I don't recommend these if you don't have a kitchen thermometer!
Cook the syrup on a light boil for 5 minutes, stirring often to prevent the syrup from sticking to the sides of the saucepan.
Meanwhile, prepare the thickener and flavors. In a small mixing bowl, whisk unflavored beef gelatin powder with water, vanilla extract, and pure maple extract.
Reduce the heat to low, and gently stir in the gelatin mixture. Cook 1 minute to dissolve, then remove the saucepan from the heat and let it cool for 10 minutes in the saucepan. Don't transfer to a cold glass jar yet, or it could crystallize the syrup!
Serve lukewarm syrup onto pancakes or transfer into a glass mason jar to cool.
How to fix a crystalized syrup?
Microwave the entire batch for 60 seconds, or rewarm in a saucepan over medium heat but don't stir or blend. Wait for the sweetener to melt and return into a syrup. The crystallized syrup is harmless, and you can rewarm this syrup every time you want to use it without affecting the syrup's properties. It can simply lose some of its maple flavors with time.
Why does my syrup form crystals when cooling down? Is it safe to eat?Your keto syrup may crystallize for many reasons, mainly because you didn't reach the melting point of the sweetener in the first step, and that's OK! Making your homemade syrup is all about chemistry, and you will get better with practice or using a kitchen thermometer.Read the recipe instruction to fix this issue and eat the syrup safely.Beef gelatin swap: replace with 1/2 teaspoon of xanthan gum, use the same method to dissolve but beware, some lumps may form!