Add all of the ingredients except the lemon in a stock pot. Put on medium heat and start stirring with a silicone spatula.
Continue to stir until the cranberries are starting to get crushed and it's becoming thicker like a jam consistency.
Turn the heat off and zest the lemon into the sauce. I zest all of mine because I love my cranberry sauce to have a very lemony flavour, but you can zest a quarter or half and taste test until you have your perfect flavour!
I much prefer making this cranberry sauce with homemade powdered erythritol. I just add regular erythritol to my Blendtec and make a powder with it. It makes the sauce less grainy and melts better!