Make Chicory Coffee: Pour the hot coffee into a mug.
Stir in the praline syrup and vanilla extract.
Using an instant milk frother or a hand-held frother, foam the milk per manufacturers’ instructions. Spoon foamed milk into coffee and serve.
Make Parline Syrup: Combine sugar, water and pecans in a small saucepan. Bring to a simmer and cook for 5 to 6 minutes.
Remove from heat and let steep for at least 12 hours and up to overnight.
Strain out the pecans and reserve for another use (such as an ice-cream topping) and pour syrup into a resealable bottle or jar.
Store in a sealed, airtight container in the refrigerator for up to a month.