Begin by whisking together the milk and flour in a separate bowl. Mix until there aren't any lumps.
In a small pot, combine the broth, seasonings, and flour and milk mixture by whisking them together quickly.
Place your stove on medium-high heat, and mix continuously while it cooks.
It will begin to thicken within a couple of minutes of cooking.
Once it thickens, remove it from the heat and let it stand for two minutes.
Store in an air tight container in the fridge for up to a week, or freeze for later use.
