Combine all ingredients in a pot on the stove, mixing to combine. (Omit date syrup if sweetener is not desired.)
Bring to a boil, then reduce to a simmer for 20-30 minutes until reduced and thickened.
Spread onto keto breakfast burger as desired! Transfer any excess into a jar or bottle and store in the fridge.
Yields ~2 cups coffee ketchup.
Notes
*Nutrition provided below for coffee ketchup made with a standard, regular ketchup. Carb count would be lower if using a low carb ketchup in the recipe.