Have all of your ingredients measured out into bowls and measuring cups ready to go before beginning to make the sauce. In a medium saucepan, heat the ghee or oil of choice over medium heat. Once hot, add the flour and the seasonings and immediately begin whisking together for about 1 minute. Slowly pour in the water (or stock) while whisking constantly, until combined and mixture is free of any lumps. Whisk in the tomato paste. Bring to a simmer, reduce heat to medium-low and let cook, stirring often, until liquid has thickened some, about 10 minutes. Use immediately or store in an air-tight container in the fridge for up to 3 days.